Results 41 to 50 of about 231,770 (260)

Geologic map of the New Braunfels, Texas, 30 x 60 minute quadrangle : geologic framework of an urban-growth corridor along the Edwards Aquifer, south-central Texas [PDF]

open access: yes, 2000
Process Steps: 1. Either: a) a Portable Document Format (PDF) version of the map provided the Bureau of Economic Geology, University of Texas at Austin was converted from pdf to Tagged Image File Format (TIFF) or b) a paper map was scanned and saved in ...
Collins, Edward W.
core   +1 more source

The Cretaceous Epoch [PDF]

open access: yesNature, 1870
THE President of the Linnean Society having been good enough to credit me, in the interesting address which has just appeared in NATURE, with the doctrine that the formation of chalk has been going on continuously over some part of the North Atlantic sea-bed from the Cretaceous epoch to the present time, I feel it due to my friend and colleague, Prof ...
openaire   +3 more sources

An Early Cretaceous pellet

open access: yesNature, 2001
Peer ...
Sanz, José Luis   +6 more
openaire   +4 more sources

Investigating bio-events and time expansion of Calcareous nannofossils in the upper part of the Gurpi Formation and lower part of the Pabdeh Formation, northwestern Shiraz [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2020
In this study, calcareous nannofossils are investigated in the upper part of the Gurpi Formation and lower part of the Pabdeh Formation at the Par-e Nobar section located in the northwest of Shiraz. The thickness of the studied section is about 41 m. The
Saeedeh Senemari, Behzad Saeedi razavi
doaj   +1 more source

A new dromaeosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai Formation of Inner Mongolia, China [PDF]

open access: yes, 2010
We describe a new dromaeosaurid theropod from the Upper Cretaceous Wulansuhai Formation of Bayan Mandahu, Inner Mongolia. The new taxon, Linheraptor exquisitus gen. et sp.
Choiniere, J.N.   +10 more
core   +1 more source

Biostratigraphy and conditions of formation of Albian and Cenomanian deposits on the south-western slope of the Ukrainian Shield (Middle Dnister region)

open access: yesGeo&Bio, 2021
Data from a comprehensive study into the lithological composition and lateral distribution of Albian and Cenomanian deposits in the Middle Dnister region (Ukraine), in the watersheds of the Smotrych–Tarnava–Studenytsia–Ushytsia–Kalyus–Zhvan–Lyadova ...
L. Kyselevych, O. Kovalchuk
doaj   +1 more source

First hybodont shark assemblage from the Cretaceous of Malaysia: updated report [PDF]

open access: yesResearch & Knowledge, 2017
A new hybodont assemblage was found in Cretaceous freshwater sediment of Peninsular Malaysia. This is the first discovery of Mesozoic nonmarine fishes from Malaysia. A faunal comparison with the Khorat Group has also been carried out.
Teng Yu He   +6 more
doaj   +1 more source

Evidence of Quaternary tectonics along Río Grande valley, southern Malargüe fold and thrust belt, Mendoza, Argentina [PDF]

open access: yes, 2019
The Malargüe fold and thrust belt is developed in the Argentinian Andes between 34° and 37° S, through the tectonic inversion of Upper Triassic and Lower Jurassic depocenters of the Neuquén Basin, with an uplift history since the Cretaceous.
Colavitto, Bruno   +4 more
core   +1 more source

Late Mesozoic marine Antarctic fishes: future perspectives based on the newly collections recovered in the Ameghino and López de Bertodano Formations [PDF]

open access: yesResearch & Knowledge, 2017
Nowadays, notothenioids are the teleostean group that dominates marine Antarctic waters. However, during the Mesozoic a diverse ichthyofauna inhabited the sea that surrounded Antarctic.
Soledad Gouiric-Cavalli   +10 more
doaj   +1 more source

Paleomagnetic Study of Mesozoic Continental Sediments Along the Northern Tien Shan (China) and Heterogeneous Strain in Central Asia [PDF]

open access: yes, 1991
A paleomagnetic study of rocks from the northern foot of the Tien Shan and the southern border of the Dzungar Basin, east of Urumqi (44.2°N, 86.0°E), spanning ages from middle Jurassic to early Tertiary was carried out to constrain the tectonic evolution
Achache   +57 more
core   +2 more sources

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