نتایج جستجو برای: sedimentary petrology

تعداد نتایج: 12279  

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1962

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1962

2012
Adi Maulana Kotaro Yonezu

Petrology and geochemical characteristics of granitic rocks from South Sulawesi, especially from Polewaliand Masamba area are presented in order to elucidate their origin of magma and geodynamic setting. The granitic rocks in these areas are dominated by granodiorite and granite in composition. Quartz, K-feldspar and plagioclase occur as major phases with hornblende and biotite as major ferroma...

Journal: Desert 2019
A. R. Karbassi M. Maghrebi M. Sadrinasab R. Lak R. Noori

Long marine sedimentary cores can be effective in paleo-climate reconstruction. The present research aims at analyzing  the temporal variation of temperature as an important climate parameter and also variations in metal concentrations (As, Ba, Cd, Li, Mo, Mg, Mn, Na, Pb, Sr, Zn, Fe, Ca, Al) of two long sedimentary cores at the Persian Gulf back to the Holocene. The obtained results revealed th...

2017
Yuanzhi Zhang Zhaojun Huang Yu Li Qing Yu Bing Wang Tingchen Jiang

This chapter presents the Late Quaternary neo-tectonic movement in the Pearl River Delta (PRD) region of China and its effects on the coastal sedimentary environment. Taking the Xilin Hill fault as the example, we have explained the reason of the PRD formation, inferred its interactions with local/regional climate and sea-level changes, and analyzed the evolution of the PRD formation and its co...

Journal: :Minerals 2023

In depth of the Simao Basin (2390 to 2650 m interval), many gray mudstone or carbonate rocks are developed in red salt-related strata, and pyrite crystals found fissure matrix. this study, petrology, mineralogy, element geochemistry, LA-MC-ICP-MS situ sulfur isotope analysis were used constrain genesis pyrite, influence relevant geological activities on potash mineralization was discussed. The ...

Journal: :Tectonics 2021

The configuration and timing of the Arabia-Eurasia continental collision, part broader Alpine-Himalayan collisional system, remains controversial. We conducted sandstone petrology, detrital zircon U-Pb-Hf isotopic trace element analysis, Cr-spinel electron microprobe geochemical analysis samples from Paleocene to Miocene peripheral foreland strata in interior Fars, southern Iran. These data wer...

2017
Junyoung Ko Sangseom Jeong

This paper presents new valuable field data and a comprehensive approach to the determination of the rock mass classification and tunnel support systems for tunnels in unconsolidated sedimentary rocks as a special soil condition. The main objective of this study is to investigate and present the characteristics of the unconsolidated sedimentary rock by using the point load tests and slake durab...

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