@conference {2017, title = {Microbial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Borneo, Indonesia}, booktitle = {SAGE2013 - Southeast Asian Gateway Evolution}, year = {2013}, month = {11/03/2013}, address = {Berlin, Germany}, abstract = {

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.

}, author = {Vedrana Pretkovi{\'c} and Juan C. Braga and Vibor Novak and Anja R{\"o}sler and Willem Renema} } @conference {2066, title = {Estimating species durations and turnover in a hyperdiverse Neogene gastropod radiation - An insight into patterns of Cenozoic biodiversity}, booktitle = {10th North American Paleontological Convention}, year = {2014}, publisher = {The Paleontological Society Special Paper, 22}, organization = {The Paleontological Society Special Paper, 22}, address = { Gainesville, Florida}, author = {Jonathan A. Todd and Kenneth G. Johnson} } @conference {2066, title = {Thirty years of field-based {\textquoteright}Big Paleontology{\textquoteright} on Cenozoic shallow marine ecosystems}, booktitle = {10th North American Paleontological Convention}, year = {2014}, publisher = {The Paleontological Society Special Paper, 22}, organization = {The Paleontological Society Special Paper, 22}, address = { Gainesville, Florida}, author = {Kenneth G. Johnson and James Klaus and Jonathan A. Todd and Willem Renema and Ann F. Budd} } @conference {2066, title = {Oligocene and Miocene history of reef corals and coral reefs in eastern Borneo (East Kalimantan, Indonesia and Sabah, Malaysia)}, booktitle = {10th North American Paleontological Convention}, year = {2014}, publisher = {The Paleontological Society Special Paper, 22}, organization = {The Paleontological Society Special Paper, 22}, address = { Gainesville, Florida}, author = {Kenneth G. Johnson and Willem Renema and Nadiezhda Santodomingo} } @conference {2013, title = {Gastropod associations as a proxy for seagrass vegetation in a tropical carbonate setting (San Salvador, Bahamas) }, booktitle = {Geological Society of America Abstracts with Programs}, year = {2012}, address = {Charlotte, North Carolina. }, abstract = {

Seagrass ecosystems play an important role in sedimentation processes and nutrient cycling and support local biodiversity by providing food and shelter for numerous associated organisms. These ecosystems have been around since the Late Cretaceous. In order to understand their emergence in geological time and their response to past perturbations we have to be able to recognize seagrass communities in the fossil record. However, seagrass itself hardly fossilizes and therefore we are searching for indirect indicators to recognize ancient seagrass vegetation. In this contribution we review molluscan evidence for palaeo-seagrass settings. Indicator species are rare since the majority of seagrass associated molluscs occurs in other marine habitats as well. Furthermore, those habitats appear to be patchy, both spatial and temporal, resulting in mixed occurrences of seagrass and non-seagrass faunas. Often only the high abundance of certain mollusc groups and the general taxonomic composition of a fauna points to seagrass environments. However, the distribution of gastropod trophic guilds in species richness versus abundance data appears to yield patterns that may be very characteristic for the identification of fossil seagrass associated faunas. We are currently applying Indirect PaleoSeagrass Indicators (IPSI\’s) to a number of fossil and modern shelly samples, both from seagrass and non-seagrass environments. We also briefly review potential sedimentary and geochemical IPSI\’s as well as fossil groups different than molluscs. Identifying seagrass environments enables us to assess diversity trends in such ecosystems through time and to study their response over time intervals with major environmental and climate change.

}, author = {Sonja Reich} } @conference {2013, title = {Diversity, abundance and taphonomic patterns across bivalve dead assemblages associated with sea grass beds, San Salvador, the Bahamas}, booktitle = {Geological Society of America Abstracts with Programs}, year = {2012}, address = {Charlotte, North Carolina. }, abstract = {

Seagrass ecosystems play an important role in sedimentation processes and nutrient cycling and support local biodiversity by providing food and shelter for numerous associated organisms. These ecosystems have been around since the Late Cretaceous. In order to understand their emergence in geological time and their response to past perturbations we have to be able to recognize seagrass communities in the fossil record. However, seagrass itself hardly fossilizes and therefore we are searching for indirect indicators to recognize ancient seagrass vegetation. In this contribution we review molluscan evidence for palaeo-seagrass settings. Indicator species are rare since the majority of seagrass associated molluscs occurs in other marine habitats as well. Furthermore, those habitats appear to be patchy, both spatial and temporal, resulting in mixed occurrences of seagrass and non-seagrass faunas. Often only the high abundance of certain mollusc groups and the general taxonomic composition of a fauna points to seagrass environments. However, the distribution of gastropod trophic guilds in species richness versus abundance data appears to yield patterns that may be very characteristic for the identification of fossil seagrass associated faunas. We are currently applying Indirect PaleoSeagrass Indicators (IPSI\’s) to a number of fossil and modern shelly samples, both from seagrass and non-seagrass environments. We also briefly review potential sedimentary and geochemical IPSI\’s as well as fossil groups different than molluscs. Identifying seagrass environments enables us to assess diversity trends in such ecosystems through time and to study their response over time intervals with major environmental and climate change.

}, author = {B. Cecares and Sonja Reich} } @conference {2045, title = {Sub - annually resolved Miocene/Pliocene tropical palaeo - climate records from giant clams}, booktitle = {11th INTERNATIONAL CONFERENCE ON PALEOCEANOGRAPHY}, year = {2013}, publisher = {Sitges}, organization = {Sitges}, address = {Barcelona}, abstract = {

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 \&$\#$39;deep
-
time\&$\#$39;.
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 (

18
O,

13
C).
Records obtained fr
om our
Miocene specimens show a remarkable agreement in Mg/Ca, Sr/Ca and

18
O and can be aligned
with the shell banding pattern.

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
.

}, url = {http://www.icp2013.cat/USB/PDF/P-183.PDF}, author = {Viola Warter and Wolfgang M{\"u}ller and Willem Renema} } @conference {2028, title = {Simulation of the Indonesian Throughflow response to Antarctic ice-sheet changes during the Middle-Miocene Climate Transition}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Frigola Boix, Amanda and Prange, Matthias and Schulz, Michael} } @conference {2025, title = {Inventorying hyperdiverse marine molluscs: is there an alternative to focusing on species?}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Todd, J. A.} } @conference {2024, title = {Seasonally-resolved records from giant clams {\textendash} Snapshots of the Miocene climate of East Kalimantan}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Warter, Viola and M{\"u}ller, Wolfgang} } @conference {2023, title = {Thermocline temperature variability in the Timor Strait over the last two glacial cycles}, booktitle = {American Geophysical Union Fall Meeting}, year = {2012}, month = {03/12/2012}, address = {San Francisco}, author = {Lo Giudice Cappelli, E. and Holbourn, A. and Kuhnt, W. and Regenberg, M. and Garbe-Schoenberg, D.} } @conference {2022, title = {Thermocline temperature variability in the Timor Strait during the last glacial cycle}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Lo Giudice Cappelli, E. and Holbourn, A. and Kuhnt, W. and Regenberg, M. and Garbe-Schoenberg, D.} } @conference {2021, title = {Variations in monsoon driven runoff from Sulawesi over the last Termination}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum Fuer Naturkunde, Berlin}, author = {K{\"u}ssner, K. and Kuhnt, W. and Holbourn, A. and Regenberg, M. and Andersen, N.} } @conference {2020, title = {Oligocene to Pliocene palaeovegetation maps for Sundaland.}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Morley, Robert J. and Morley, Harsanti P. and Jais, Jaizan md} } @conference {2018, title = {Understanding the murky origins of coral diversity in the Coral Triangle}, booktitle = {Southeast Asian Gateway Evolution (SAGE 2013)}, year = {2013}, month = {11/03/13}, address = {Museum f{\"u}r Naturkunde, Berlin, Germany}, url = {http://www.sage2013.org/}, author = {Nadiezhda Santodomingo and Kenneth G. Johnson} } @conference {2017, title = {Microbial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Borneo, Indonesia}, booktitle = {SAGE2013 - Southeast Asian Gateway Evolution}, year = {2013}, month = {11/03/2013}, address = {Berlin, Germany}, abstract = {Coral 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. }, author = {Vedrana Pretkovi{\'c} and Juan C. Braga and Anja R{\"o}sler} } @conference {2015, title = {Diversity and palaeoecology of Miocene coral-associated molluscs from East Kalimantan}, booktitle = {SAGE2013: Southeast Asian Gateway Evolution}, year = {2013}, address = {Museum fuer Naturkunde, Berlin}, abstract = {

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.

}, author = {Aires Kusworo and Sonja Reich and Frank P. Wesselingh and Nadiezhda Santodomingo and Willem Renema} } @conference {2014, title = {Mollusks as seagrass indicators in the Miocene of Indonesia}, booktitle = {SAGE 2013: Southeast Asian Gateway Evolution}, year = {2013}, address = {Museum fuer Naturkunde, Berlin}, abstract = {

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.

}, author = {Sonja Reich and Frank P. Wesselingh and Willem Renema and Warter, Viola} } @conference {2012, title = {Indonesian Throughflow variability through the Makassar Strait during the last glacial cycle}, booktitle = {SAGE 2013}, year = {2013}, author = {Jan Schroeder and Wolfgang Kuhnt and Ann Holbourn and Marcus Regenberg and Nils Andersen} } @conference {2010, title = {Tropical convection variability in the West Pacific Warm Pool since the Last Glacial Maximum}, booktitle = {SAGE 2013}, year = {2013}, author = {Nicholas Fraser and Timothe Bolliet and Ann Holbourn and Wolfgang Kuhnt} } @conference {2006, title = {Foraminiferal assemblages in Miocene carbonates of Indonesia}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, abstract = {Neogene 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. }, author = {Vibor Novak and Willem Renema} } @conference {2005, title = {Bryozoan diversity in the Miocene of East Kalimantan, Indonesia}, booktitle = {Southeast Asian Gateway Evolution: SAGE2013}, year = {2013}, month = {11/03/2013}, address = {Museum fuer Naturkunde, Berlin}, author = {Emanuela Di Martino and Paul D. Taylor} } @conference {1989, title = {Coralline algae from the Miocene Mahakam Delta (East Kalimantan, SE Asia)}, booktitle = {GSA Annual Meeting 2012}, year = {2012}, month = {04/11/12}, address = {Charlotte, USA}, abstract = {Although the Miocene is the epoch of the onset of the biodiversity hotspot in South East Asia, crustose coralline algae (CCA) of this age are poorly known in region. To fill this knowledge gap, crucial to understand the evolutionary history of reef building coralline algae, we studied CCA in Miocene reefs in the Kutai Basin, the largest sedimentary basin in Borneo that was dominated by siliciclastic sediments of the Proto-Mahakam delta. Local carbonate buildups comprising low relief patch reefs occur within the deltaic succession in shallow and turbid water, influenced by high siliciclastic input (Wilson, 2002). CCA in the Kutai basin are mostly found in association with coral reefs, encrusting corals or fragments of them. In beds with very high siliciclastic content no coralline algae were observed in the outcrops, but corals were still present. Two main CCA assemblages have been recognized in the studied Middle Miocene reefs: 1) a shallow-water assemblage, with two species of Neogoniolithon, thick crusts of Spongites, various Hydrolithon and also Sporolithon and Lithoporella. 2) In darker waters preferentilaly grew melobesioid assemblages, dominated by rhodoliths mainly consisting of Lithothamnion or by thin crusts of Mesophyllum and Sporolithon. This last one is the only assemblage found in mesophotic reefs. CCA of East Kalimantan show occurrences of some extant species earlier than expected. These new first-occurrence dates are being used to produce a detailed time tree of the main reef building CCA species with the help of a new molecular phylogeny based on five genetic markers. Wilson Moyra E.J. (2002) Cenozoic carbonates in Southeast Asia: implications for equatorial carbonate development. Sedimentary Geology 147, 295{\textendash} 428}, author = {Anja R{\"o}sler and Juan Carlos Braga} } @conference {1986, title = {An overview of the Cenozoic fossil record of bryozoans in the tropics}, booktitle = {GSA Annual Meeting}, year = {2012}, month = {04/11/2012}, address = {Charlotte, North Carolina}, keywords = {BRYOZOA, Cenozoic, Evolution, Taphonomy}, author = {Paul D Taylor and Emanuela Di Martino} } @conference {1963, title = {Late Cenozoic history of the Southeast Asian marine biodiversity maximum: new data for old questions}, booktitle = {Palaeontological Association Annual Meeting}, year = {2011}, month = {19/12/2011}, address = {Plymouth}, author = {Kenneth G. Johnson and Willem Renema} } @conference {1957, title = {High-resolution palaeoenvironmental records from Miocene patch reefs from SE-Kalimantan (Indonesia)}, booktitle = {International Coral Reef Symposium 2012}, year = {2012}, address = {Cairns, Australia}, author = {Warter, Viola and M{\"u}ller, Wolfgang} } @conference {1950, title = {How diverse were reef corals of South East Asia during the Miocene?}, booktitle = {11th Symposium on Fossil Cnidaria and Sponges}, year = {2011}, month = {19-29/08/2011}, publisher = {M. ARETZ, S. DELCUL{\'E}E, J. DENAYER \& E. POTY (Eds.). K{\"o}lner Forum Geol. Pal{\"a}ont., 19: 155-156.}, organization = {M. ARETZ, S. DELCUL{\'E}E, J. DENAYER \& E. POTY (Eds.). K{\"o}lner Forum Geol. Pal{\"a}ont., 19: 155-156.}, address = {Li{\`e}ge, Belgium}, author = {Nadiezhda Santodomingo and Kenneth G. Johnson} } @conference {1909, title = {Cenozoic bryozoans from southeast Asia: a contribution to the origin of high tropical biodiversity}, booktitle = { 10th International Bryozoology Association, Larwood Meeting}, year = {2011}, type = {Conference abstract}, address = {Santiago de Compostela}, author = {Emanuela Di Martino} }