Results 31 to 40 of about 131,970 (167)

Sinian gas sources and effectiveness of primary gas-bearing system in Sichuan Basin, SW China

open access: yesPetroleum Exploration and Development, 2021
Based on correlation between geochemical characteristics of Sinian and Cambrian source rocks and discovered gas reservoirs, paleoand the analysis on geological conditions of reservoir formation, the sources of natural gas in the Sinian of Sichuan Basin ...
Wenzhi ZHAO   +6 more
doaj   +1 more source

Characteristics of Chang 7 shale gas reservoirs in Triassic Yanchang Formation of Ordos Basin and its exploration and development prospects

open access: yesShiyou shiyan dizhi
As the second-largest sedimentary basin in China, the Ordos Basin has enormous potential for oil and gas exploration. The Chang 7 member of the Triassic Yanchang Formation in the basin is extensively distributed with organic-rich source rocks, covering ...
Kai WU   +5 more
doaj   +1 more source

Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region [PDF]

open access: yes, 2006
During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region.
Downes, Hilary   +2 more
core   +1 more source

Research on sedimentary environment and provenance for hydrocarbon source rocks of Upper Carboniferous Batamayineishan Formation in northeastern Junggar Basin: evidences from the geochemistry of mudstones

open access: yesShiyou shiyan dizhi
The distribution rules and hydrocarbon potential of source rocks are the major factors which determine oil and gas exploration in the northeastern Junggar Basin.
Qianru CAI   +6 more
doaj   +1 more source

Petrochemical Characteristics of Cenozoic Basalts in Datong, Shanxi

open access: yesTaiyuan Ligong Daxue xuebao, 2021
Basalt in the Cenozoic period in Datong, Shanxi can be divided into two types: alkaline basalt in the northwest and tholeiite basalt in the southeast. Petrological and geochemical analyses were carried out on the basalts in Datong area. As known from the
Xiaoqin LI   +4 more
doaj   +1 more source

Provenance history of a Late Triassic-Jurassic Gondwana margin forearc basin, Murihiku Terrane, North Island, New Zealand: petrographic and geochemical constraints [PDF]

open access: yes, 2004
The Murihiku Terrane in the North Island was a forearc basin adjacent to a volcanic arc along the eastern margin of Gondwana during the Mesozoic. The rocks that infill the basin are mainly volcaniclastic sandstones and mudstones, often turbiditic, with ...
Briggs, Roger M.   +2 more
core   +2 more sources

The metagenomics of biosilicification: causes and effects [PDF]

open access: yes, 2008
In order to determine the links between geochemical parameters controlling the formation of silica sinter in hot springs and their associated microbial diversity, a detailed characterisation of the waters and of in situ-grown silica sinters was combined ...
D. J. Tobler   +3 more
core   +2 more sources

Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, Eastern Iran [PDF]

open access: yes, 2011
West directed subduction zones show common characteristics, such as low structural elevation, deep trench, steep slab and a conjugate back-arc basin that are opposite to those of the east directed subduction zones.
Arjmandzadeh, R.   +5 more
core   +2 more sources

Provenance and geochemistry of exotic clasts in conglomerates of the Oligocene Torehina Formation, Coromandel Peninsula, New Zealand [PDF]

open access: yes, 2003
Non-marine pebble to cobble conglomerates of the lower Torehina Formation (Oligocene) crop out along western Coromandel Peninsula and overlie, with strong angular discordance, continental-margin metasedimentary rocks (Manaia Hill Group) of Mesozoic (Late
Baker C. K.   +19 more
core   +2 more sources

Geochemical Characteristics of Selenium in Surface Soil of Central Townships in Zhaojue County, Sichuan Province

open access: yesYankuang ceshi, 2022
BACKGROUND Selenium (Se) is one of the essential trace elements for humans, and an important way for humans to obtain and supplement selenium is by eating natural selenium-enriched agricultural products. The geochemical characteristics of selenium in the
ZHAO Chen   +6 more
doaj   +1 more source

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