Results 241 to 250 of about 57,014 (308)

Dolomitization and the causes of dolomitization dolomite reservoir

Chinese Journal of Geochemistry, 2012
This paper utilizes multi-methods, such as core observation, slice identification, isotope analysis, trace element analysis, fluid inclusion technique and so on, to study the causes of the dolomite in the Nanpu Sag and the origins of the dolomite reservoir.
Bojiang Fan, Xiaoming Zhang, Jian Zhang, Xiongqi Pang, Chenglin Liu   +4 more
openaire   +1 more source

Effective flotation separation of apatite from dolomite using a new eco-friendly depressant gallic acid

Green Chemistry
Apatite and dolomite presented challenges in their separation due to their similar surface chemistry. To achieve flotation separation of apatite and dolomite, depressants were required, but the conventional depressants had...
Shengzong Lan, Peilun Shen, Qifang Zheng, Lidong Qiao, Liuyang Dong, Dianwen Liu   +5 more
semanticscholar   +1 more source

On the dolomite reservoirs formed by dissolution: Differential eogenetic versus hydrothermal in the lower Permian Sichuan Basin, southwestern China

, 2020
Dolomite reservoirs formed by dissolution are significant for hydrocarbon exploration, but their origins are poorly understood because of their complexity.
Di Xiao, Jian Cao, Bing Luo, X. Tan, Hong Liu, Benjian Zhang, Xun Yang, Ya Li   +7 more
semanticscholar   +1 more source

Estimation of Dolomite Formation: Dolomite Precipitation and Dolomitization

Journal of the Geological Society of India, 2016
Abstract: Reactive-transport models are developed here that produce dolomite via two scenarios: primary dolomite (no CaCO3 dissolution involved) versus secondary dolomite (dolomitization, involving CaCO3 dissolution). Using the available dolomite precipitation rate kinetics, calculations suggest that tens of meters of thick dolomite ...
openaire   +1 more source

Chapter 7 Dolomites and Dolomitization

1979
Publisher Summary This chapter discusses dolomites and dolomitization. There are numerous kinds of dolomite. According to numerous investigators, primary precipitation of dolomite crystals, particularly in marine environments, probably represented in Holocene carbonate sediments, is of little significance when considering the great bulk of ancient ...
George V. Chilingar, D.H. Zenger, H.J. Bissell, K.H. Wolf   +3 more
openaire   +1 more source

Formation, diagenesis and palaeoenvironmental significance of upper Ediacaran fibrous dolomite cements

Sedimentology, 2019
Neoproterozoic marine dolomite cements represent reliable, albeit complex, archives of their palaeoenvironment. Petrological and high‐resolution geochemical data from well‐preserved fibrous dolomite and pyrite in the upper Ediacaran (ca 551·1 to 548·0 Ma)
Yongjie Hu, C. Cai, Dawei Liu, C. Pederson, Lei Jiang, Anjiang Shen, A. Immenhauser   +6 more
semanticscholar   +1 more source

Cavity‐filling dolomite speleothems and submarine cements in the Ediacaran Dengying microbialites, South China: Responses to high‐frequency sea‐level fluctuations in an ‘aragonite–dolomite sea’

Sedimentology, 2019
Speleothems, mostly composed of calcium carbonate, are widely present in modern karst‐originated caves, but have rarely been reported in palaeokarst systems. This study presents a novel type of dolomite speleothem and subsequent submarine dolomite cement,
Yi Ding, Daizhao Chen, Xiqiang Zhou, Chuan Guo, Taiyu Huang, Gongjing Zhang   +5 more
semanticscholar   +1 more source

Formation of ordered dolomite in anaerobic photosynthetic biofilms

Geology, 2019
8 Dolomite enabled the preservation of fine microbial textures in some Archean and Proterozoic 9 marine microbialites, but has rarely done so during the Phanerozoic. Here, we report precipitation 10 of dolomite in anoxygenic photosynthetic biofilms grown
Mirna Daye, J. Higgins, T. Bosak
semanticscholar   +1 more source

Dolomite dissolution: An alternative diagenetic pathway for the formation of palygorskite clay

Sedimentology, 2019
Palygorskite is a fibrous, magnesium‐bearing clay mineral commonly associated with Late Mesozoic and Early Cenozoic dolomites. The presence of palygorskite is thought to be indicative of warm, alkaline fluids rich in Si, Al and Mg.
Brooks H. Ryan, Stephen E. Kaczmarek, J. Rivers   +2 more
semanticscholar   +1 more source

Mechanism of calcium lignosulfonate in apatite and dolomite flotation system

International Journal of Minerals, Metallurgy, and Materials, 2022
B. Feng, Liangzhu Zhang, Wenpu Zhang, Hui-hui Wang, Z. Gao   +4 more
semanticscholar   +1 more source