03199nas a2200157 4500008004100000245010100041210006900142260003200211520265700243100002402900700002002924700001702944700001802961700001902979856004302998 2013 eng d00aMicrobial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Borneo, Indonesia0 aMicrobial carbonates in Miocene reefs in the Mahakam Delta in Ea aBerlin, Germanyc11/03/20133 a

Microbial carbonates are deposits that form by the activity of bentic microbial communities. Microbialites usually form domical, columnar or conical structures and can have laminated, clotted, dendritic or homogenous macrofabric. They have a broad distribution and can grow in a variety of different environments such as hot springs, freshwater lakes, hypersaline lakes, reefs and other marine environments. This research focuses on microbialites associated to coral reefs. Coral patch reefs in the Miocene Mahakam Delta in East Kalimantan (Borneo, Indonesia) grew in shallow marine turbid waters. These patch reefs developed from delta front to deeper (prodelta) settings in areas with temporary reduced siliciclastic input. Langhian reef deposits are well exposed in limestone quarries in the Samarinda area and locally include microbial carbonates. Two different types of microbial carbonates have been found around Samarinda in two localities 2 km apart. These sections were logged in detail and 208 samples were collected. Meso and macrostructure of microbialites were identified at the outcrops. Thin sections from carbonate samples were examined under optical microscope and microfacies were classified using the Dunham (1962) and Embry and Klovan (1971) terms. The carbonate content was analyzed using Total Inorganic Carbon analysis, with 12% carbon as a standard for carbon calibration. In the northern section, microbialites occur as low-relief domes, up to 2 m wide and 0.5 m high, with internal lamination, developed around large coral fragments at the transition from reef deposits to fine-grained siliciclastics.
The second type of microbialites has been found in the southern locality as decimeter-scale nodules ("megaoncoids") formed around nuclei of large coral fragments. Small nodules were bound together into bigger nodules. Microbial micrite with laminated to digitated fabrics intergrew with coralline algae to form the thick covers of these "megaoncoids", which laterally change into coral boundstones. In both sections microbialites are not components of the reef framework. They grew around large coral fragments on the flanks of the patch reefs. The microbialites that form low relief domes developed on a nearly flat, stable seafloor seawards of the patch reef. The "megaoncoids" in the southern section formed as a result of downslope movement of coral fragments coated by microbialite/coralline algal crust. The steep slope at the flank of the patch reef favoured falling and overturning of encrusted corals and continued growth of microbial crusts on other sides of nodules.

1 aPretković, Vedrana1 aBraga, Juan, C.1 aNovak, Vibor1 aRösler, Anja1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/206900469nas a2200121 4500008004100000245011400041210006900155100001700224700002600241700001800267700001900285856004300304 2013 eng d00aShells from seagrass meadows and coral carpets: How isotopic signals can help to distinguish palaeohabitats 0 aShells from seagrass meadows and coral carpets How isotopic sign1 aReich, Sonja1 aWesselingh, Frank, P.1 aWarter, Viola1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/206400509nas a2200145 4500008004100000245011600041210006900157300000800226490000600234100001700240700002600257700001800283700001900301856004300320 2013 eng d00aFaunal composition and isotopic signals of mollusk shells indicate seagrass meadows in the Miocene of Indonesia0 aFaunal composition and isotopic signals of mollusk shells indica a1690 v81 aReich, Sonja1 aWesselingh, Frank, P.1 aWarter, Viola1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/206300362nas a2200109 4500008004100000245006800041210006500109300001200174490000600186100001700192856004300209 2013 eng d00aGastropods indicate seagrass meadows (at San Salvador, Bahamas)0 aGastropods indicate seagrass meadows at San Salvador Bahamas a350-3510 v81 aReich, Sonja uhttps://ipaeg.myspecies.info/node/206200500nas a2200133 4500008004100000245012900041210006900170260000900239100002600248700001700274700001400291700001800305856004300323 2013 eng d00aA new benthic Mg/Ca temperature calibration to reconstruct thermocline temperature variability in the Indonesian archipelago0 anew benthic MgCa temperature calibration to reconstruct thermocl c20131 aCappelli, Lo, Giudice1 aHolbourn, A.1 aKuhnt, W.1 aRegenberg, M. uhttps://ipaeg.myspecies.info/node/205102145nas a2200205 4500008004100000245007800041210006900119490000600188520150000194100001801694700002501712700002001737700002501757700002801782700002201810700002201832700002201854700002001876856004301896 2013 eng d00aV Factor: Volunteers as a bridge between museum scientists and the public0 aV Factor Volunteers as a bridge between museum scientists and th0 v13 a

V Factor is a new programme at the Natural History Museum in London. It offers volunteers the chance to work in public view alongside Museum scientists on collection-based research and curation projects, taking them from visitor to proactive volunteer. It aims to involve a volunteers project manager, scientists, curators, volunteers and the public in the museum’s research. Volunteers work alongside scientists on a research project whilst benefiting from a unique, informal and fun learning experience. Visitors are able to observe the processing of samples and interact with those involved. The management of this volunteer programme is described in this paper. The pilot project was ‘Throughflow’; an international study of Southeast Asian fossil corals as a means to describe the high biodiversity of their ecosystem and the effects of environmental change. Volunteers have successfully assisted with the cleaning of specimens so that they may be curated. At the same time, they have been discussing with experts project-related information, collections care, and the role of museums today. The programme has been continuously evaluated and changed as felt necessary. By March 2013, 45 volunteers were involved. Outcomes have included improved volunteer talent and education management, excellent assistance with scientific work and novel means of attracting the public to the museum’s work.

1 aMiller, Renee1 aJohnson, Kenneth, G.1 aThomas, Ali, L.1 aDouglas, Lyndsey, G.1 aSantodomingo, Nadiezhda1 aBroom, Yoke, Shum1 aAvedillo, Therese1 aMurray, Cassandra1 aSadler, Theresa uhttps://ipaeg.myspecies.info/node/204901949nas a2200157 4500008004100000245004900041210004900090260002700139520147900166653002001645653001801665653001201683100002801695700002501723856004301748 2013 eng d00aDigging on the origins of the Coral Triangle0 aDigging on the origins of the Coral Triangle aEilat, Israelc12/20133 a

Reefs in the Coral Triangle host the richest coral diversity today, and palaeontological and molecular evidence suggest that the Miocene (5-23 Ma) was an important period for diversification in this region. As part of the Throughflow ITN, the aims of this study are to determine which coral species occurred during this period and to understand how environmental factors controlled coral diversification on both temporal and spatial scales. Our new collections include tens of thousands of specimens from the rich and well-preserved Miocene fossil record of small patch reefs that developed in turbid habitats that are now preserved in the sediments of the Kutai Basin of East Kalimantan (Indonesia). Preliminary results suggest that species diversity was high and comparable to modern coral settings living under turbid environmental conditions. A total of 150 morphospecies from 70 genera have been identified, including nine genera known as extinct. Our findings have revealed that some lineages that were previously known from the Plio-Pleistocene record were already present during the Miocene time. These discoveries have a profound impact on our understanding of the origins of today’s diversity in the Coral Triangle. Further research will focus on the incorporation of these fossils into phylogenetic analyses in order to estimate divergence times and explore the relationship of evolutionary trends with environmental changes at biogeographic scale.

10aEast Kalimantan10aFossil corals10aMiocene1 aSantodomingo, Nadiezhda1 aJohnson, Kenneth, G. uhttps://ipaeg.myspecies.info/node/204602508nas a2200133 4500008004100000245009600041210006900137260002200206520204200228100001802270700002202288700001902310856004502329 2013 eng d00aSub - annually resolved Miocene/Pliocene tropical palaeo - climate records from giant clams0 aSub annually resolved MiocenePliocene tropical palaeo climate re aBarcelonabSitges3 a

Changes in seasonality play an important role in regards to climate changes (e.g. Eldrett
et al.,
2009). To better characterize Miocene/Pliocene tropical climate and environmental change, it is
therefore crucial to reconstruct their variability on a seasonal scale. However, highly time resolve
d
palaeoenvironmental records which allow assessing
tropical intra
-
annual SST variability (like
ENSO or monsoon events) are rare, especially in 'deep
-
time'.
Here, we present high resolution
trace element and stable isotope proxy records from well
-
preserved aragonitic Late Miocene and
Pliocene
Tridacna
spp.
shells, sampled along the coast of East Kalimantan (Indonesia) and Sabah
(Malaysia), respectively. Our multi
-
proxy approach utilizes LA
-
ICPMS El/Ca ratios (e.g. Mg/Ca,
Sr/Ca, Ba/Ca) and micromilled stable isotope profiles (
δ
18
O,
δ
13
C).
Records obtained fr
om our
Miocene specimens show a remarkable agreement in Mg/Ca, Sr/Ca and
δ
18
O and can be aligned
with the shell banding pattern.
δ
18
O intra
-
annual variability indicates a palaeoseasonality of 3
-
4°C
(if interpreted as being temperature
-
controlled only). Ba/
Ca profiles from Pliocene tridacnin shells
are characterized by pronounced, episodically occurring peaks with a high intrashell
reproducibility. Very similar Ba/Ca signals found in modern
Tridacnagigas
have been interpreted
as palaeoproductivity indicators
(Elliot et al., 2009). Records of a modern
Tridacna
spp. from
Sabah are utilized for comparison and calibration purposes
.

1 aWarter, Viola1 aMüller, Wolfgang1 aRenema, Willem uhttp://www.icp2013.cat/USB/PDF/P-183.PDF02493nas a2200193 4500008004100000245007000041210006900111260006700180490000600247520188400253653001402137653001302151653001702164653001502181653001502196100002002211700002502231856004302256 2013 eng d00aWhy is the tropical Cenozoic fossil record so poor for bryozoans?0 aWhy is the tropical Cenozoic fossil record so poor for bryozoans aCatania, ItalybMuseo Tridentino di Scienze Naturalicin press0 v13 a

Diverse bryozoan assemblages have been recorded from widely across the Cenozoic palaeotropics, including the West Indies and Central America (Miocene-Pleistocene), Arabia (Oligocene), East Africa (Miocene), India (Eocene-Miocene) and the East Indies (Eocene-Miocene). However, records of Cenozoic tropical bryofaunas are relatively few compared with higher latitudes, and bryozoan limestones seem to be lacking. Insights into the reasons for this poor fossil record can be gleaned from comparisons with modern tropical bryozoan faunas, and consideration of the effects of diagenesis on fossil preservation and other factors that bias against the tropical Cenozoic fossil record. At least for the North Atlantic, bryozoan assemblage diversity in the modern tropics is not significantly less than in higher latitudes. However, a survey of colony-forms shows that encrusting species of small biomass are more dominant in tropical assemblages (mean 78% of species) than they are outside the tropics (mean 60% of species). These encrusting colonies may be difficult to observe and study when, as is often the case in tropical carbonate settings, diagenetic cement binds sediment firmly to the colony surfaces. Most erect bryozoan species living today in the tropics have weakly mineralized skeletons with a poor potential for fossilization; robust species capable of generating large quantities of carbonate sediment are uncommon. In addition, a higher proportion of cheilostomes in the tropics have metastable skeletons of aragonite: a Raman spectroscopic survey of 23 bryozoan species encrusting the undersides of platy corals from Puerto Rico and Malaysia showed 30% to be aragonitic and 27% bimineralic. Along with the typically higher Mg levels in the calcite of tropical cheilostomes, this further biases against preservation of bryozoans in the Cenozoic fossil record.

10aBryozoans10aCenozoic10acolony-forms10adiagenesis10amineralogy1 aTaylor, Paul, D1 aDi Martino, Emanuela uhttps://ipaeg.myspecies.info/node/203502143nas a2200193 4500008004100000245007200041210006700113260006800180490000600248520154200254653001401796653001401810653001101824653001101835653001501846100002501861700002001886856004301906 2013 eng d00aA brief review of seagrass-associated bryozoans, Recent and fossil.0 abrief review of seagrassassociated bryozoans Recent and fossil aCatania, ItalybMuseo Tridentino di Scienze Naturali cin press0 v13 a

Information concerning fossil and modern bryozoan assemblages reported from seagrass habitats is scattered through a large number of papers. The current paper groups taxonomically data from the literature on both modern and fossil bryozoans associated with seagrasses. Most of the modern data comes from studies focused on Posidonia oceanica meadows inhabiting the Mediterranean Sea, where a total of 152 bryozoan species have been recorded. Forty-one species have been reported on seagrasses from other geographical areas, such as Saudi Arabia, tropical America, Japan and Australia. Differences are outlined between the well-delineated communities of the leaves and the rhizomes, and some generalizations are made about morphological strategies for living as seagrass epiphytes. Seagrasses are seldom fossilized but examples of ancient communities can be inferred from the presence of bioimmurations of seagrass surfaces and from associated biota. They include a single Cretaceous community from the Maastrichtian of The Netherlands (43 bryozoan species), and a few Cenozoic communities described from several geographical regions (e.g. Europe, tropical America, Indo-Pacific; 72 species). New data is reported from a dark grey, silty clay in the Miocene of East Kalimantan (Indonesia) where the presence of the seagrass-indicative gastropod Smaragdia allows interpretation of the palaeoenvironment as a seagrass meadow with associated corals. The bryozoan assemblage here is monogeneric, comprising two species of Vincularia.

10aBryozoans10aepiphytes10afossil10aRECENT10aseagrasses1 aDi Martino, Emanuela1 aTaylor, Paul, D uhttps://ipaeg.myspecies.info/node/203400581nas a2200133 4500008004100000245012000041210006900161300000900230490000700239100002600246700002100272700002000293856013400313 2013 eng d00aChanges in the Indonesian Throughflow and southeast Asian hydroclimate during the Middle-Miocene Climate Transition0 aChanges in the Indonesian Throughflow and southeast Asian hydroc a91230 v151 aBoix, Amanda, Frigola1 aPrange, Matthias1 aSchulz, Michael uhttps://ipaeg.myspecies.info/content/changes-indonesian-throughflow-and-southeast-asian-hydroclimate-during-middle-miocene-climat00610nas a2200121 4500008004100000245013000041210006900171260004700240100002600287700002100313700002000334856013400354 2013 eng d00aSimulation of the Indonesian Throughflow response to Antarctic ice-sheet changes during the Middle-Miocene Climate Transition0 aSimulation of the Indonesian Throughflow response to Antarctic i aMuseum fuer Naturkunde, Berlinc11/03/20131 aBoix, Amanda, Frigola1 aPrange, Matthias1 aSchulz, Michael uhttps://ipaeg.myspecies.info/content/simulation-indonesian-throughflow-response-antarctic-ice-sheet-changes-during-middle-miocene00485nas a2200097 4500008004100000245009500041210006900136260004700205100001700252856011800269 2013 eng d00aInventorying hyperdiverse marine molluscs: is there an alternative to focusing on species?0 aInventorying hyperdiverse marine molluscs is there an alternativ aMuseum fuer Naturkunde, Berlinc11/03/20131 aTodd, J., A. uhttps://ipaeg.myspecies.info/content/inventorying-hyperdiverse-marine-molluscs-there-alternative-focusing-species00547nas a2200109 4500008004100000245010500041210006900146260004700215100001800262700002200280856013500302 2013 eng d00aSeasonally-resolved records from giant clams – Snapshots of the Miocene climate of East Kalimantan0 aSeasonallyresolved records from giant clams Snapshots of the Mio aMuseum fuer Naturkunde, Berlinc11/03/20131 aWarter, Viola1 aMüller, Wolfgang uhttps://ipaeg.myspecies.info/content/seasonally-resolved-records-giant-clams-%E2%80%93-snapshots-miocene-climate-east-kalimantan-000597nas a2200145 4500008004100000245009000041210006900131260003500200100002600235700001700261700001400278700001800292700002500310856011600335 2013 eng d00aThermocline temperature variability in the Timor Strait during the last glacial cycle0 aThermocline temperature variability in the Timor Strait during t aMuseum fuer Naturkunde, Berlin1 aCappelli, Lo, Giudice1 aHolbourn, A.1 aKuhnt, W.1 aRegenberg, M.1 aGarbe-Schoenberg, D. uhttps://ipaeg.myspecies.info/content/thermocline-temperature-variability-timor-strait-during-last-glacial-cycle00571nas a2200145 4500008004100000245008000041210006900121260004700190100001700237700001400254700001700268700001800285700001700303856010500320 2013 eng d00aVariations in monsoon driven runoff from Sulawesi over the last Termination0 aVariations in monsoon driven runoff from Sulawesi over the last  aMuseum Fuer Naturkunde, Berlinc11/03/20131 aKüssner, K.1 aKuhnt, W.1 aHolbourn, A.1 aRegenberg, M.1 aAndersen, N. uhttps://ipaeg.myspecies.info/content/variations-monsoon-driven-runoff-sulawesi-over-last-termination00496nas a2200121 4500008004100000245006300041210006200104260004700166100002300213700002500236700002100261856009200282 2013 eng d00aOligocene to Pliocene palaeovegetation maps for Sundaland.0 aOligocene to Pliocene palaeovegetation maps for Sundaland aMuseum fuer Naturkunde, Berlinc11/03/20131 aMorley, Robert, J.1 aMorley, Harsanti, P.1 aJais, Jaizan, md uhttps://ipaeg.myspecies.info/content/oligocene-pliocene-palaeovegetation-maps-sundaland00433nas a2200109 4500008004100000245007700041210006900118260005400187100002800241700002500269856002900294 2013 eng d00aUnderstanding the murky origins of coral diversity in the Coral Triangle0 aUnderstanding the murky origins of coral diversity in the Coral  aMuseum für Naturkunde, Berlin, Germanyc11/03/131 aSantodomingo, Nadiezhda1 aJohnson, Kenneth, G. uhttp://www.sage2013.org/01792nas a2200133 4500008004100000245010100041210006900142260003200211520123000243100002401473700002001497700001801517856012301535 2013 eng d00aMicrobial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Borneo, Indonesia0 aMicrobial carbonates in Miocene reefs in the Mahakam Delta in Ea aBerlin, Germanyc11/03/20133 aCoral patch reefs grew in shallow marine turbid waters in the Miocene Mahakam Delta in East Kalimantan (Borneo, Indonesia). These patch reefs developed from delta front to deeper (prodelta) settings in areas with temporary reduced siliciclastic input. These coral reef deposits are well exposed in limestone quarries in the Batu Putih area in Samarinda and locally include microbial carbonates. Two different types of microbial carbonates have been found in two localities around Samarinda, 2 km apart from each other. In the northern section, microbialites occur as low-relief domes, up to 2 m wide and 0.5 m high, with internal lamination, developed around large coral fragments. They appear at the transition from bioclastic sediments with coralline algae and corals to fine-grained siliciclastic deposits in a deepening succession. The second type of microbialites can be found in the southern locality as decimetre-scale nodules formed around nuclei of large coral fragments. Microbial micrite with laminated to digitated fabrics intergrew with coralline algae to form the thick covers of these "megaoncoids". The large nodules are the main components of carbonate breccias deposited on the flanks of a patch reef. 1 aPretković, Vedrana1 aBraga, Juan, C.1 aRösler, Anja uhttps://ipaeg.myspecies.info/content/microbial-carbonates-miocene-reefs-mahakam-delta-east-kalimantan-borneo-indonesia02082nas a2200121 4500008004100000245006400041210005900105260002300164520164100187100001801828700002001846856009401866 2013 eng d00aThe evolution of Indo-Pacific reef building coralline algae0 aevolution of IndoPacific reef building coralline algae aBerlinc10/03/20133 aThe onset of the biodiversity hotspot in the Indo-West Pacific region took place during the Miocene. Crustose coralline algae (CCA) of this epoch from South East Asia, however, are poorly known, despite their importance for the generation and maintenance of reef biodiversity. We studied CCA in Miocene reefs in the Kutai Basin (East Kalimantan, Indonesia) to fill this knowledge gap, crucial to understand the evolutionary history of reef building algae. CCA are mostly found encrusting corals and forming nodules together with foraminifers. Two main CCA assemblages can be recognized in the studied reefs: 1) A shallow-water assemblage, comprising two species of Neogoniolithon, several Hydrolithon species, Spongites, Lithoporella, and also Sporolithon. 2) A melobesioid assemblage that preferentially grew in darker waters, consisting of Lithothamnion, Mesophyllum and Sporolithon. The recorded palaeodepth distribution of CCA assemblages is consistent with the one reported from modern and fossil coral reefs. Miocene CCA of East Kalimantan include some extant species, which appeared earlier than previously known. These new first-occurrence dates are used to produce a detailed time tree of the main reef building CCA species with the help of a new molecular phylogeny, which is based on five genetic markers (18S, 28S, COI, psbA, UPA). The sequences have been obtained from samples from Indo-Pacific localities and Genbank. This study comprises the biggest set of reef building CCA taxa ever analysed before, and aims to disentangle the polyphyly of traditional taxa such as the mastophoroid and lithophylloid subfamilies.1 aRösler, Anja1 aBraga, Juan, C. uhttps://ipaeg.myspecies.info/content/evolution-indo-pacific-reef-building-coralline-algae01679nas a2200157 4500008004100000245009000041210006900131260003500200520105800235100001901293700001701312700002601329700002801355700001901383856011901402 2013 eng d00aDiversity and palaeoecology of Miocene coral-associated molluscs from East Kalimantan0 aDiversity and palaeoecology of Miocene coralassociated molluscs  aMuseum fuer Naturkunde, Berlin3 a

Currently, SE Asia is the global marine centre of diversity. High diversity is concentrated in and around reefs. A large variety of organisms, including corals and fish, but also molluscs, crustaceans and echinoderms contribute to this high diversity. In order to understand the timing and the context of the origin of the modern biodiversity hotspot, the fossil record needs to be documented. However, reef facies often suffer strong diagenesis, compromising the fossil record of reef and reef-associated organisms. Here we present an assessment of a well-preserved Late Miocene mollusc fauna from Bontang (East Kalimantan, Indonesia). The fauna is found in association with branching corals, dominated by Dictyaraea. The mollusc fauna is dominated by predatory and browsing carnivorous snails and includes reefal indicators such as the gastropod Coralliophyla and the bivalve Tridacna. The new Bontang fauna gives a glimpse of the diversity and ecological composition of a Late Miocene mollusc fauna from a so-called coral-carpet environment.

1 aKusworo, Aires1 aReich, Sonja1 aWesselingh, Frank, P.1 aSantodomingo, Nadiezhda1 aRenema, Willem uhttps://ipaeg.myspecies.info/content/diversity-and-palaeoecology-miocene-coral-associated-molluscs-east-kalimantan01918nas a2200145 4500008004100000245006400041210006400105260003500169520140000204100001701604700002601621700001901647700001801666856008801684 2013 eng d00aMollusks as seagrass indicators in the Miocene of Indonesia0 aMollusks as seagrass indicators in the Miocene of Indonesia aMuseum fuer Naturkunde, Berlin3 a

Today’s centre of maximum marine biodiversity is located in the Indo-Malayan region. Understanding the development of this biodiversity hotspot through the Cenozoic could answer numerous questions about the responses of highly diverse faunal associations to small and large scale environmental changes. When assessing marine biodiversity through time comparisons of taxon diversity are only meaningful when comparing faunas from similar habitats. To evaluate diversity through time within the same ecological setting, it is indispensable to reliably discriminate different habitats. A good example for the difficulties which may occur when identifying marine paleo-habitats is the challenge of recognizing seagrass vegetation in the fossil record. Due to the low preservation potential of marine angiosperms, indirect indicators, e.g. associated organisms with a higher potential for preservation, are commonly used to infer the presence of seagrass meadows in the geological past. Because of their high fossilization potential and their abundance in marine habitats mollusks yield the possibility to be useful paleo seagrass indicators. Here we assess the potential use of indicator species, species and feeding guild composition of whole assemblages, as well as stable isotope signals in shells for their suitability to determine seagrass vegetation in the Miocene of Indonesia.

1 aReich, Sonja1 aWesselingh, Frank, P.1 aRenema, Willem1 aWarter, Viola uhttps://ipaeg.myspecies.info/content/mollusks-seagrass-indicators-miocene-indonesia00565nas a2200133 4500008004100000245009700041210006900138100001900207700002000226700001800246700002200264700001900286856012600305 2013 eng d00aIndonesian Throughflow variability through the Makassar Strait during the last glacial cycle0 aIndonesian Throughflow variability through the Makassar Strait d1 aSchroeder, Jan1 aKuhnt, Wolfgang1 aHolbourn, Ann1 aRegenberg, Marcus1 aAndersen, Nils uhttps://ipaeg.myspecies.info/content/indonesian-throughflow-variability-through-makassar-strait-during-last-glacial-cycle00526nas a2200121 4500008004100000245009700041210006900138100002100207700002100228700001800249700002000267856011700287 2013 eng d00aTropical convection variability in the West Pacific Warm Pool since the Last Glacial Maximum0 aTropical convection variability in the West Pacific Warm Pool si1 aFraser, Nicholas1 aBolliet, Timothe1 aHolbourn, Ann1 aKuhnt, Wolfgang uhttps://ipaeg.myspecies.info/content/tropical-convection-variability-west-pacific-warm-pool-last-glacial-maximum02842nas a2200205 4500008004100000245012500041210006900166300001200235490000800247520207100255100001702326700002802343700001802371700002502389700002402414700002002438700002502458700001902483856013402502 2013 eng d00aEnvironmental reconstruction of a late Burdigalian (Miocene) patch reef in deltaic deposits (East Kalimantan, Indonesia)0 aEnvironmental reconstruction of a late Burdigalian Miocene patch a110-1220 v3743 a

Most studies of Cenozoic shallow-water, mixed carbonate-siliciclastic depositional systems have focused on their sedimentology. To date, however, comprehensive analyses of biotas and biofacies of Indo-West Pacific reefs that developed in mixed carbonate-siliciclastic systems are lacking. This study describes the palaeoenvironment and biodiversity of a late Burdigalian patch reef that developed in a mixed carbonate-siliciclastic depositional system. The studied exposure is located at the northeast margin of the Kutai Basin near Bontang (Indonesia), and is approximately 80 m wide and 25 m thick. Multi-taxon analysis of the most abundant fossil groups, including larger benthic foraminifera, corals, coralline algae, and bryozoans, aims to provide a model for environmental interpretation that will allow comparison with similar deposits of Indo-West Pacific region. Based on fossil content and lithology, five different facies types have been distinguished: foraminiferal packstone (FP), bioclastic packstone with foralgal communities (BP), thin-platy coral sheetstone (CS), platy-tabular coral platestone (CP), and shales (S). Among larger benthic foraminifera, smaller and more robust forms dominate in the FP and BP facies, while larger and flatter forms are the most abundant in the CS and CP facies. Thin-platy corals are dominant in the CS facies and gradually change into thicker platy-tabular forms in the CP facies. Assemblages and growth forms of coralline algae show no major differences between the facies types and are dominated by melobesioids and Sporolithon. The majority of bryozoan species are encrusting and were found only in the CS facies. Light-dependent organisms occurring in the reef indicate low light conditions typical for mesophotic reefs. The relatively small size of this reef complex and quite distinct vertical changes in the facies types, combined with the high siliciclastic content in most of the units, points to strong terrigenous input affecting water transparency as the main factor controlling the reef growth.

1 aNovak, Vibor1 aSantodomingo, Nadiezhda1 aRösler, Anja1 aDi Martino, Emanuela1 aBraga, Juan, Carlos1 aTaylor, Paul, D1 aJohnson, Kenneth, G.1 aRenema, Willem uhttps://ipaeg.myspecies.info/content/environmental-reconstruction-late-burdigalian-miocene-patch-reef-deltaic-deposits-east-kalim01998nas a2200121 4500008004100000245006500041210006500106260004700171520152600218100001701744700001901761856009601780 2013 eng d00aForaminiferal assemblages in Miocene carbonates of Indonesia0 aForaminiferal assemblages in Miocene carbonates of Indonesia aMuseum fuer Naturkunde, Berlinc11/03/20133 aNeogene carbonates in Indonesia are characterised by different depositional environments. We studied localities outcropping on Mangkalihat Peninsula, Kutai Basin, and Java, that were deposited in a time interval from Early (Te5) to Middle Miocene (Tf2). In order to reconstruct depositional environments and obtain biostratigraphic information, larger benthic foraminifera (LBF) assemblages were analysed from these three locations. The northernmost, and stratigraphically oldest, from the studied carbonates are exposed on Mangkalihat Peninsula. They were formed in shallow-water environment on carbonate platform. Stratigraphically important LBF indicate Early to Middle Miocene age (Te5-Tf1). Towards the south, in the Kutai Basin, isolated patch reefs occur within siliciclastic sediments, developed in mixed carbonate-siliciclastic depositional systems. In general, LBF assemblage is indicative of low-light conditions typical for mesophotic reefs. Based on LBF late Early to Middle Miocene age (Tf1-Tf2) can be suggested. The southernmost carbonate exposures are located on Central Java, in the Bulu Limestone member. The LBF assemblage composition indicate environmental conditions typical for continental shelf edge. Middle Miocene (Tf2) can be inferred for these limestones based on LBF. Here we present an overview of Indonesian Early to Middle Miocene LBF assemblages in a range of depositional environments. We will assess the interplay between stratigraphical and environmental control on LBF assemblages. 1 aNovak, Vibor1 aRenema, Willem uhttps://ipaeg.myspecies.info/content/foraminiferal-assemblages-miocene-carbonates-indonesia00475nas a2200109 4500008004100000245006800041210006700109260004700176100002500223700002100248856009600269 2013 eng d00aBryozoan diversity in the Miocene of East Kalimantan, Indonesia0 aBryozoan diversity in the Miocene of East Kalimantan Indonesia aMuseum fuer Naturkunde, Berlinc11/03/20131 aDi Martino, Emanuela1 aTaylor, Paul, D. uhttps://ipaeg.myspecies.info/content/bryozoan-diversity-miocene-east-kalimantan-indonesia-0