Results 61 to 70 of about 43,967 (245)

Permian in north Bulgaria. II. Formal lithostratigraphy related to the Upper Permian

Geologica Balcanica, 1993
The following nine official lithostratigraphic units are subdivided and described within the frames of an Upper Permian Lower Danube Group in accord with the requirements of the Bulgarian Stratigraphic Code: Mirovo Formation, Vetrino Formation (with Žitnica and Hrabrovo Menber), Târgoviste Formation (with Trastikovo and Bezvodica Member), Totleben ...
openaire   +1 more source

Are regional stages necessary? [PDF]

, 2005
The bipartition of the Carboniferous System adopted by the International Commission of Stratigraphy for the world stratigraphic chart is impractical in Gondwana.
Gonzalez, Carlos Roberto
core  

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

Energy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang, Rui Wang, Yinglie Li, Xinhe Wu, Yanming Qu   +4 more
wiley   +1 more source

New results of microfaunal and geochemical investigations in the Permian–Triassic boundary interval from the Jadar Block (NW Serbia)

Geologica Carpathica, 2018
Detail results of microfaunal, sedimentological and geochemical investigations are documented from a newly discovered section of the Permian–Triassic boundary (PTB) interval in the area of the town of Valjevo (northwestern Serbia).
Sudar Milan N., Kolar-Jurkovšek Tea, Nestell Galina P., Jovanović Divna, Jurkovšek Bogdan, Williams Jeremy, Brookfield Michael, Stebbins Alan   +7 more
doaj   +1 more source

Formation of the Wink Sink, A Salt Dissolution and Collapse Feature, Winkler County, Texas [PDF]

, 1982
UT ...
Baumgardner, Jr., Robert W., Goldstein, Arthur G., Hoadley, Ann D.   +2 more
core   +1 more source

Experimental and Theoretical Investigation on the Progressive Breaking Law of Thick and Hard Rock Strata in Deep Mining

Energy Science &Engineering, EarlyView.
This work reveals the “C‐Y,” double “Y,” “π,” and “Y” fracture modes of thick, hard strata and their progressive breaking process (O‐F‐R/S mode), providing a theoretical basis for controlling strong ground pressure in deep mining. ABSTRACT In response to the dynamic hazards caused by the fracture of thick‐hard strata in deep mining, this study ...
Meilu Yu, Jianping Zuo
wiley   +1 more source

FIRST REPORT ON THE UPPERMOST PERMIAN OSTRACODS FROM THE MASORE SECTION (EXTERNAL DINARIDES), SLOVENIA

Rivista Italiana di Paleontologia e Stratigrafia
The ostracod assemblages from the Upper Permian and Permian-Triassic transitional strata of the Masore section in the External Dinarides (Slovenia) were studied.
Tea Kolar-Jurkovšek, EWA OLEMPSKA , BOGDAN JURKOVŠEK   +2 more
doaj   +1 more source

Comment on “Bilaterian Burrows and Grazing Behavior at >585 Million Years Ago” [PDF]

, 2013
Pecoits et al. (Reports, 29 June 2012, p. 1693) describe bilaterian trace fossils and assign them an Ediacaran age based on the age of a granite interpreted as intrusive.
Beri, Angeles, Bettucci Sanchez, Leda, Bossi, Jorge, Gaucher, Claudio, Poire, Daniel Gustavo   +4 more
core   +2 more sources

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, EarlyView.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

1º Congresso Internacional de Geologia de Timor-Leste. [PDF]

, 2012
Congresso Internacional de Geologia de Timor ...
Costa, Norberta, Nogueira, Pedro
core