Results 21 to 30 of about 342 (179)

In-situ thermal simulation experiment of single organic matter pore evolution in shale

open access: yesShiyou shiyan dizhi, 2023
Organic matter pores is the most important shale reservoir space in South China, and the types of organic matter influence the formation and evolution process of organic matter pores.
Binbin XI   +7 more
doaj   +1 more source

The Checa Silurian Section, an Outstanding Fossil Site in the Molina-Alto Tajo UNESCO Global Geopark, Spain [PDF]

open access: yesGeoconservation Research, 2021
The Paleozoic succession in the Nevera inlier of the Molina-Alto Tajo UNESCO Global Geopark (Western Iberian Cordillera, NE Spain) includes an incomplete, richly fossiliferous Silurian succession, ca. 350‒400 m thick, at the locality of Checa, one of the
Juan Carlos Gutierrez-Marco, Petr Storch
doaj   +1 more source

Darriwilian (Middle Ordovician) graptolites from the northern margin of the Qaidam Basin (Qinghai, China) [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
A restudy of the early Darriwilian graptolites from the Dameigou section in the Qaidam Basin provides some new information for graptolite biostratigraphy.
Liting Deng, Ming Li, Mo Huang
doaj   +1 more source

Organic Petrological Characteristics of Graptolite and Its Contribution to Buried Organic Carbon of Longmaxi Formation Shales, Middle Yangtze Region

open access: yesEnergies, 2022
The shale gas exploration of the Longmaxi Formation in the Yangtze Region of China has made a significant breakthrough. As an important hydrocarbon generation organism, graptolite is widely distributed in the Longmaxi Formation shales, but its ...
Wenhao Li   +3 more
doaj   +1 more source

On the graptolite schist's formation, Silurian-Lower Devonian, in the Carpatho-Balkanides of eastern Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2005
The fabric of the Silurian and a part of the Lower Devonian in the Carpatho-Balkanides of eastern Serbia, i.e. in two large geotectonic units, the Kučaj Unit (Getic) and the Luznica Unit (West Kraishte), is reviewed in this paper.
Krstić Branislav   +2 more
doaj   +1 more source

Geological Characteristics and Challenges of Marine Shale Gas in the Southern Sichuan Basin

open access: yesEnergies, 2023
After more than 10 years of exploration, development, research, and practical efforts, China has opened up new perspectives for the commercial exploitation of marine shale gas.
Shasha Sun   +4 more
doaj   +1 more source

Searching for the Ordovician–Silurian boundary in Estonia, Latvia and Lithuania [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The present study focuses on determining the position of the lower boundary of the Silurian System in the eastern Baltic region. To achieve this, we conducted a comprehensive analysis of stable isotopic curves, combined with previously published data on ...
Tõnu Meidla, Olle Hints, Leho Ainsaar
doaj   +1 more source

Basic characteristics of key interfaces in Upper Ordovician Wufeng Formation – Lower Silurian Longmaxi Formation in Sichuan Basin and its periphery, SW China

open access: yesPetroleum Exploration and Development, 2022
Based on anatomy of key areas and data points and analysis of typical features of shell layer in Guanyinqiao Member, basic characteristics of key interfaces, mainly bentonite layers, in the Upper Ordovician Wufeng Formation—Lower Silurian Longmaxi ...
Yuman WANG   +7 more
doaj   +1 more source

A Study on Hydrocarbon Generation Capacity of Graptolite in Marine Hydrocarbon Source Rocks in Southern China

open access: yesYankuang ceshi, 2017
The common development of graptolite in marine shale of Southern China has a close relationship with the formation of marine shale gas, but whether graptolite has hydrocarbon generating ability of shale gas has not been directly confirmed by relevant ...
WANG Qin   +4 more
doaj   +1 more source

The Formation Mechanism and Geological Significance of Graptolite from the Longmaxi Formation: Constraints from in situ Multi-element Imaging Analysis

open access: yesYankuang ceshi, 2019
BACKGROUND The black shale of the Longmaxi Formation in the Upper Yangtze region is rich in graptolites. Most of them were preserved as a carbonaceous film, and enriched in organic-rich layers.
ZHU Cheng-lin   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy