A5070785995- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Marine Biology and Ecology Research
- Geochemistry and Geologic Mapping
- Paleontology and Evolutionary Biology
- High-pressure geophysics and materials
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Rock Mechanics and Modeling
- earthquake and tectonic studies
- Mollusks and Parasites Studies
- Nematode management and characterization studies
- Mining and Gasification Technologies
- Aquatic Invertebrate Ecology and Behavior
- Cephalopods and Marine Biology
- Geological and Geophysical Studies
Chang'an University
2015-2018
Abstract The latest discovery of microfossils from the lower Cambrian (Fortunian Stage) Zhangjiagou Lagerstätte in South China are presented. This lagerstätte is rich exceptionally preserved microfossils, including embryos Olivooides multisulcatus , mirabilis and Pseudooides prima ; hatched stages O . Hexaconularia sichuanensis Quadrapyrgites quadratacris cycloneuralians represented by Eopriapulites sphinx largest known fragment implies that its adult length can be more than 9.0 mm with at...
Abstract We describe new material of three‐dimensionally phosphatized small shelly fossils Acanthocassis and Xinlispina gen. nov. from the Fortunian Stage (early Cambrian) southern Shaanxi northern Sichuan Provinces. The materials allow description delicate morphology these skeletons, also their skeletogenesis. have comparable morphological features: a main branch radially arranged sub‐branches. They differ each other in many details, e.g., presence single central only , nodes Acanthocassis....
Fine pyroclastic materials form bentonites through subsidence, hydrolysis, and argillation in alkaline marine environments, which can further transform to K‐bentonite. Bentonites or K‐bentonites are quite popular with geologists because their formation often reflects geologic events. However, studies mainly focus on K‐bentonite, research ordinary China is almost nonexistent. Recent shows that the Wangpo shale consists of bentonites. Through thorough field investigations, indoor...
The Kekebieketi mining area is located on the southern margin of Altai Mountains in Northern Xinjiang and at junction Siberia Kazakhstan‐Junggar plates. Faults magmatic rocks are well developed, main stratum Middle Devonian Kaxiweng Formation. Kekebieketi‐Kalatongke‐Xibodu basic to ultrabasic mixed rock strip an appropriate for mineral resources a good target study crustal mantle evolution. This explored tectonic age setting provides basis discrimination wider formation. were mainly gabbro,...
The Llandovery (lower Silurian) Liangshan Danangou section of Nanzheng, southern Shaanxi Province, China, contains a complete Aeronian succession and abundant graptolites. One hundred twenty‐five species graptolite have been found in this section. Using high‐resolution methods, the Rhuddanian, Aeronian, Telychian strata divided into 3, 4, 1 zones, respectively. In particular, there are 47 newly established Spirograptus andrewsi Zone (Aeronian) which has 2 subzones; lower Monograptus...
Abstract Maikhanellids are a distinct group of Cambrian Fortunian small shelly fossils by the cap‐shaped profiles and scaly shell ornamentation. According to individual shape ornamentation feature types SO maikhanellids which were collected from Xixiang botia, we confirmed family Maikhanellidae content six genera, Maikhanella, Ramenta, Purella, Ramentoides, Yunnannopleura Mediata. Unlike halkieriid animals whose shells spicules articulated on different body parts, presumably yielded...
The Palaeoproterozoic Dakendaba Group and the Cambrian–Ordovician Tanjianshan occur on northern margin of Qaidam Basin. Their fracture structure is well developed, intermediate‐acid rocks are widely distributed, providing an ideal setting for pegmatite mineralization. Field investigation has identified 200 veins, which more than 40 have various degrees Nb Ta These pegmatites can be classified into four types, based distribution, mineral assemblages, a genesis sequence ① microcline, ②...