Results 121 to 130 of about 104,619 (297)

The fossil record of early tetrapods: worker effort and the end-Permian mass extinction [PDF]

, 2010
It is important to understand the quality of the fossil record of early tetrapods (Tetrapoda, minus Lissamphibia and Amniota) because of their key role in the transition of vertebrates from water to land, their dominance of terrestrial faunas for over ...
Bebber D.F., Benton M.J., Benton M.J., Benton M.J., Emma L. Bernard, Fara E., Fara E., Flessa K.W., Jaeger G.F., James E. Tarver, Marcello Ruta, Maxwell W.D., Michael J. Benton, Peters S.E., Raup D.M., Schoch R.R., Sepkoski J.J., Valentine J.W., Wickström L.M.   +18 more
core   +3 more sources

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Eocene Limestones Overlying Lower Cretaceous Deposits of Western lstria (Croatia): Did Some Parts of Present lstria Form Land During the Cretaceous?

Geologia Croatica, 2010
In the region of the western Istrian anticline, erosional remains of the transgressive Eocene Foraminiferal limestones overly shallow waterdeposits of Early Cretaceous age (Valanginian, Hauterivian andBarremian).
Dubravko Matičec, Igor Vlahović, Ivo Velić, Josip Tišljar   +3 more
doaj   +1 more source

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

Light δD apatites reveal deep origin water in North China Craton intracontinental granites and basalts

Nature Communications
Water is essential to the formation of intracontinental granites, but its origin remains elusive. Here we address this scientific problem by analyzing D/H isotopes of apatites, hydrous minerals in Jurassic and Early Cretaceous granites and basalts from ...
Chuan-Mao Yang, Yi-Gang Xu, Xiao-Ping Xia, Jin-Hui Yang, Xiao-Long Huang, Christopher J. Spencer, Jin-Feng Sun, Qing Yang   +7 more
doaj   +1 more source

Latitudinal distribution of paleotemperature on land and sea from early Cretaceous to middle Miocene [PDF]

, 1994
Paleotemperature data from the of oceans and the continents are summarized for the interval from the early Cretaceous through the middle Miocene. The data are contoured on diagrams of age vs latitude after adjustments for the known occurrences of ...
Frakes, Larry A., Ludwig, Wolfgang, Probst, Jean-Luc   +2 more
core  

Dinosaur footprints and other Ichnofauna from the Cretaceous Kem Kem Beds of Morocco [PDF]

, 2014
We describe an extensive ichnofossil assemblage from the likely Cenomanian-age 'lower' and 'upper' units of the 'Kem Kem beds' in southeastern Morocco.
Baidder, Lahssen, Dutheil, Didier B., Ibrahim, Nizar, Martill, David M., Sereno, Paul C., Varricchio, David J., Wilson, Jeff A., Zouhri, Samir   +7 more
core   +4 more sources

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

Geological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Molecular Palaeontology Prospects From Exceptionally Preserved Eocene Brackish‐Water Bivalve Batissa sitakaraensis (Venerida: Corbiculidae) From Hokkaido, Japan

Geological Journal, EarlyView.
This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura, Kazuki Hirota, Hiroyuki Kagi, Takashi Matsubara, Takenori Sasaki   +4 more
wiley   +1 more source

Palaeontology: An Early Cretaceous pellet

, 2001
Peer ...
Sanz, José Luis, Chiappe, Luis M., Fernández-Jalvo, Yolanda, Ortega, Francisco, Sánchez Chillón, Begoña, Poyato-Ariza, Francisco J., Pérez-Moreno, Bernardino P.   +6 more
openaire   +1 more source