Results 41 to 50 of about 6,828,747 (385)

A latest Cretaceous to earliest Paleogene dinoflagellate cyst zonation of Antarctica, and implications for phytoprovincialism in the high southern latitudes [PDF]

, 2012
The thickest uppermost Cretaceous to lowermost Paleogene (Maastrichtian to Danian) sedimentary succession in the world is exposed on southern Seymour Island (65° South) in the James Ross Basin, Antarctic Peninsula.
Bowman, Vanessa C., Francis, Jane E., Haywood, Alan M., Hunter, Stephen J., Riding, James B.   +4 more
core   +1 more source

Geochronology and geochemistry of the Late Jurassic-Early Cretaceous Sangxiu Formation volcanic rocks of the Chegu region, Southern Tibet

Frontiers in Earth Science, 2023
The evolution patterns of the Neo-Tethys Himalayas have been a major topic of research, particularly in the Neo-Tethys Ocean. The geological field investigations were conducted in the Late Jurassic-Early Cretaceous Sangxiu Formation in the Tsomei Longzi ...
Feng Wu, Lixin Wang, Lixin Wang, Zhitao Huo, Jia Liao, Yao Tang, Tao Yang, Xin Li, Shijie Wang, Hongji Xiao, Binhua Cao, Binhua Cao   +11 more
doaj   +1 more source

Sedimentation of the Lower Cretaceous Xiagou formation and Its Response to Regional Tectonics in the Qingxi Sag, Jiuquan Basin, NW China [PDF]

, 2014
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag.
Chen, Si, Gan, Huajun J., Jin, Siding D., Lv, Zhenyu Y., Wang, Hua, Wei, Jun   +5 more
core   +1 more source

A bizarre Early Cretaceous enantiornithine bird with unique crural feathers and an ornithuromorph plough-shaped pygostyle

Nature Communications, 2017
Enantiornithes are the most successful clade of Mesozoic birds. Here, we describe a new enantiornithine bird, Cruralispennia multidonta gen. et sp. nov., from the Protopteryx-horizon of the Early Cretaceous Huajiying Formation of China.
Min Wang, J. O'Connor, Yan-Hong Pan, Zhonghe Zhou   +3 more
semanticscholar   +1 more source

Tip dating supports novel resolutions of controversial relationships among early mammals [PDF]

, 2020
The estimation of the timing of major divergences in early mammal evolution is challenging due to conflicting interpretations of key fossil taxa. One contentious group is Haramiyida, the earliest members of which are from the Late Triassic.
Beck, RMD, King, B
core   +2 more sources

Termite colonies from mid-Cretaceous Myanmar demonstrate their early eusocial lifestyle in damp wood

National Science Review, 2019
Insect eusociality is characterized by cooperative brood care, reproductive division of labour and multiple generations of adults within a colony. The morphological specializations of the different termite castes from Burmese amber were recently reported,
Zhipeng Zhao, Xiangchu Yin, Chungkun Shih, T. Gao, D. Ren   +4 more
semanticscholar   +1 more source

Geological characteristics of early cretaceous volcanic rocks and analysis of metallogenic potential of uranium mineralization in Moganshan basin, northern Zhejiang province, China

Frontiers in Earth Science
The Moganshan Volcanic Basin is located in the northeastern section of the Ganhang volcanic-tectonic-uranium polymetallic metallogenic belt. To explore the uranium mineralization potential of these volcanic rocks, petrographic, elemental geochemical ...
Xiaolong Wang, Xiaolong Wang, Wengao Zhang, Wengao Zhang, Shenghong Cheng, Bo Wang, Yifei Tang, Wei Li   +7 more
doaj   +1 more source

Osteology and relationships of Rhinopycnodus gabriellae gen. et sp. nov. (Pycnodontiformes) from the marine Late Cretaceous of Lebanon [PDF]

, 2013
The osteology of Rhinopycnodus gabriellae gen. and sp. nov., a pycnodontiform fish from the marine Cenomanian (Late Cretaceous) of Lebanon, is studied in detail.
Capasso, Luigi, Taverne, Louis
core   +3 more sources

Early Cretaceous paleomagnetic and geochronologic results from the Tethyan Himalaya: Insights into the Neotethyan paleogeography and the India–Asia collision

Scientific Reports, 2016
To better understand the Neotethyan paleogeography, a paleomagnetic and geochronological study has been performed on the Early Cretaceous Sangxiu Formation lava flows, which were dated from ~135.1 Ma to ~124.4 Ma, in the Tethyan Himalaya.
Yiming Ma, Tianshui Yang, W. Bian, Jingjie Jin, Shihong Zhang, Huaichun Wu, Haiyan Li   +6 more
semanticscholar   +1 more source

Petrological and Geochemical Constraints on the Origin of Early Cretaceous Volcanic Rocks in the Central‐East Asia: Implications for Crustal Growth and Evolution

Geochemistry, Geophysics, Geosystems, 2018
New petrological and geochemical data for Early Cretaceous volcanic rocks in the North China Craton (NCC) combined with published data of cotemporaneous volcanic rocks in the NCC and eastern Central Asian Orogenic Belt (ECAOB) are used to understand ...
Sheng‐Ping Qian, Zhong‐Yuan Ren, Le Zhang, Lei Zhang, Ya‐Dong Wu, Sheng‐Wang Mei, Xiao‐Bo Xu, Qing‐Chen Luo   +7 more
doaj   +1 more source