Integrated rock magnetic and mineralogical study of the Lower Triassic sedimentary rocks from Spitsbergen

2019 ◽  
Vol 290 ◽  
pp. 87-98
Author(s):  
Katarzyna Dudzisz ◽  
Aneta Hanc-Kuczkowska
Keyword(s):  
Sedimentary Rocks ◽  
Lower Triassic ◽  
Mineralogical Study

scholarly journals LOWER TRIASSIC VOLCANOGENIC FORMATIONS OF THE PRONCHISHCHEV RIDGE (NORTH OF CENTRAL SIBERIA)

2021 ◽  
Vol 2 (1) ◽  
pp. 201-206
Author(s):  
Aleksei Yu. Popov ◽  
Evgeny S. Sobolev ◽  
Artem Ya. Shevko ◽  
Andrei V. Yadrenkin
Keyword(s):  
Sedimentary Rocks ◽  
Spatial Relationship ◽  
Lower Triassic ◽  
Middle Part ◽  
Upper Permian ◽  
Central Siberia ◽  
Supply Channel ◽  
Single Complex ◽  
Geochemical Studies ◽  
Different Parts

The volcanogenic formations of the middle part of the Pronchishchev ridge are considered. Based on new data from the lithological, petrographic, geochemical studies of igneous and volcanogenic sedimentary rocks and stratigraphic studies of the Upper Permian-Lower Triassic terrigenous strata that enclose them, a model of their spatial relationship is proposed. It is shown that the dolerite body and the adjacent tuff breccia in the field of development of Upper Permian rocks as well as tuffite gravelites in the field of Lower Triassic rocks are a single complex of formations of different parts of the diatreme. The time of implantation of the diatreme is defined as the beginning of the Late Olenek. The wide development of vent facies dolerites in the diatreme may indicate the repeated activation of the supply channel.

The Occurrence of Robertsite in a Sedimentary Phosphate Ore from Thailand

1988 ◽  
Vol 52 (367) ◽  
pp. 505-508 ◽  
Author(s):  
Steven J. Van Kauwenbergh ◽  
Michelle Cooper-Fleck ◽  
Marilyn R. Williams
Keyword(s):  
Chemical Analysis ◽  
Broad Spectrum ◽  
Sedimentary Rocks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Phosphate Ore ◽  
Mineralogical Study ◽  
Phosphate Deposit

AbstractDuring a mineralogical study of guano-derived sedimentary phosphate ore from the Lamphun area of northwest Thailand, robertsite [Ca6(H2O)6Mn3+9O6(PO4)9.3H2O] was identified and concentrated to a level suitable for X-ray diffraction and chemical analysis. Robertsite has previously been described only in association with altered phosphatic pegmatites. This new occurrence in a phosphate deposit indicates that it may be found in a broad spectrum of sedimentary rocks.

Tentative identification of diagenetic products of cyclic biphytanes in sedimentary rocks from the uppermost Permian and Lower Triassic

2017 ◽  
Vol 111 ◽  
pp. 144-153 ◽  
Author(s):  
Ryosuke Saito ◽  
Kunio Kaiho ◽  
Masahiro Oba ◽  
Jinnan Tong ◽  
Zhong-Qiang Chen ◽  
...  
Keyword(s):  
Sedimentary Rocks ◽  
Lower Triassic ◽  
Tentative Identification

scholarly journals Widespread late Mesozoic to Recent remagnetization of Paleozoic and lower Triassic sedimentary rocks from South China

1987 ◽  
Vol 139 (1-2) ◽  
pp. 133-143 ◽  
Author(s):  
Dennis V. Kent ◽  
Xiangshan Zeng ◽  
You Zhang Wen ◽  
Neil D. Opdyke
Keyword(s):  
South China ◽  
Sedimentary Rocks ◽  
Lower Triassic ◽  
Late Mesozoic

scholarly journals Analyses of permeability and porosity of sedimentary rocks in terms of unconventional geothermal resource explorations in Poland

Geologos ◽  
2016 ◽  
Vol 22 (2) ◽  
pp. 149-163 ◽  
Author(s):  
Anna Sowiżdżał ◽  
Roman Semyrka
Keyword(s):  
Pore Diameter ◽  
Sedimentary Rocks ◽  
Lower Triassic ◽  
Effective Porosity ◽  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Average Pore ◽  
Skeletal Density ◽  
Geothermal Potential ◽  
Resource Exploration

Abstract Petrophysical investigations are fundamental to natural resource exploration. In order to recognise the geothermal potential of sedimentary rocks in central Poland, 259 samples were collected from prospective deep-lying geothermal reservoirs. Parameters measured include bulk density, skeletal density, effective porosity, permeability, average pore diameter and specific surface. Results indicate that at great depths (mostly > 3,000 m below surface) sedimentary rocks show low values of porosity (mainly less than 5%) and permeability (only sporadically in excess of 1 md). These values call for a petrothermal use of reservoirs, for which an Enhanced Geothermal System (EGS) was developed. Reservoirs suited for the EGS are Carboniferous and Lower Triassic sandstones in the central part of Poland (Mogilno-Łódź Trough region and a small part of the Kujawy Swell and Fore-Sudetic regions). In addition, Carboniferous limestones in this area are potentially prospective.

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