Caddisfly larvae construct underwater protective cases using surrounding materials, thus providing information on environmental conditions in both modern and ancient systems. Microbial bioherms associated with caddisfly cases are found in the Berriassian-Hauterivian (~140-130 Ma) Shinekhudag Formation of Mongolia, and yield new insights into aspects of lacustrine paleoecosystems and paleoenviro...

Carbonate sediments have been deposited in oceans and seas from the Proterozoic up to the present day. Their palaeogeographic distribution, extent and composition changed substantially through time. Recent carbonate platforms are closely linked with reef constructions, but, during the past, non-reefal carbonate production played an important role in the periods of the depressed reef-growth (KIE...

The continental shelf of Northwest Australia hosts an extensive tropical carbonate ramp that forms important template for the interpretation similar systems in sedimentary record. Yet, little is known about its development from middle to late Quaternary, a period high frequency glacioeustatic changes sea-level and climate. This research describes core seismic-reflection data mid-ramp outer tran...

The optical features of mineral composition and texture in petrographic thin sections are an important basis for rock identification evolution analysis. However, the efficiency accuracy human visual interpretation section images have depended on experience experts a long time. application image-based computer vision deep-learning algorithms to intelligent analysis properties (in plane polarizin...

Carbonate ooids are a significant component of shallow water carbonate deposits in the present and geologic past, yet their origin formation mechanism have been subject continuing debate. This study focuses on well-preserved Holocene aragonitic collected from west Qaidam Basin, Qinghai-Tibetan Plateau (QTP). The mineralogical chemical compositions, stable (?13C ?18O), radiocarbon isotopes were ...

High-resolution images of Mars from National Aeronautics and Space Administration (NASA) rovers revealed mm-size loose haematite spherulitic deposits (nicknamed “blueberries”) similar to terrestrial iron-ooids, for which both abiotic biotic genetic hypotheses have been proposed. Understanding the formation mechanism these spherules can thus improve our knowledge on possible geologic evolution l...