Uranium series dating rock art in east timor Sexchatnoregistration

Here we report on uranium-series dating of a stegodon tusk recovered from the Ainaro Gravels of Timor.

The six dates obtained indicate the local presence of stegodons in Timor at or before 130 ka, significantly pre-dating the earliest evidence of humans on the island.

Conodont apatite δ 88/86 Sr and δ 44/40 Ca compositions and implications for the evolution of Palaeozoic to early Mesozoic seawater.

Global warming and recurrent mass bleaching of corals. Paleoceanography, 31, 1350–1367, doi:10.1002/2016PA002974.

Stegodons are a commonly recovered extinct proboscidean (elephants and allies) from the Pleistocene record of Southeast Asian oceanic islands.

Estimates on when stegodons arrived on individual islands and the timings of their extinctions are poorly constrained due to few reported direct geochronological analyses of their remains.

The rock art and the associated natural scenery at 38 sites located in the Zuojiang River valley, in the southwest of Guangxi Zhuang Autonomous Region, southern China, were inscribed recently on UNESCO’s World Heritage List. Huashan is probably the largest known rock art panel in the world, consisting of approximately 1900 identifiable figures and occupying an area of approximately 8000 m. Huashan, 56 secondary carbonate layers above and below the paintings were studied for their mineralogy, oxygen, and carbon isotopic compositions and dated by the Th/U dating results demonstrate that ages of the rock paintings can be bracketed between 1856±±41yr BP corresponding to the middle to the end of the Eastern Han dynasty (AD 25 to 220).Professor Malcolm Mc Culloch is an ARC Laureate Fellow undertaking research on the theme ‘Coral Reef Futures: a new paradigm for quantifying the resilience of marine calcifiers to ocean acidification and global change'. Response of coral calcification and calcifying fluid composition to thermally induced bleaching stress. He is a member of ARC Centre of Excellence for Coral Reef Studies and leader of the UWA node - Program 3: Responding to a changing world. At many sites throughout the world rock art paintings have been covered by naturally deposited calcite laminations, which we demonstrate can be individually dated by recently improved uranium-series methods.Here we report the application of multi-collector inductively coupled plasma mass spectrometry to measure the ages for carbonate coatings that bracket red pigment at Lene Hara cave, East Timor, which could be evidence of human painting.

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