Results 11 to 20 of about 516 (108)

Analisis Kemampugalian dan Kemampugaruan Material Pit B Tambang Emas Kabupaten Aceh Tengah [PDF]

, 2021
Pemberaian massa batuan untuk keperluan penambangan dapat dilakukan dengan metode penggalian mekanis maupun peledakan. Untuk menentukan metode yang paling sesuai, analisis kemampugalian dan kemampugaruan dapat dilakukan terhadap material yang akan ...
Arief, Muhammad Zaini, C, Nursetyo, jasipto, Alio, Kusumanto, Damar, Prassetyo, Simon Heru, Rahman, Ali   +5 more
core   +1 more source

Sedimentary ancient DNA from caves: Challenges and opportunities

Journal of Quaternary Science, Volume 40, Issue 4, Page 565-578, May 2025.
Abstract Caves are unique depositional environments that hold great potential for long‐term preservation of DNA due to their typically cool and stable internal climates, buffered from external climate extremes. Bones from caves have long been recognised as an excellent source of ancient DNA, yet the potential for DNA preservation in cave sediments ...
Siobhan Evans, Bastien Llamas, Jamie R. Wood   +2 more
wiley   +1 more source

Secondary Enrichment of Copper at the Madison Gold Skarn Deposit, Silver Star District, Montana [PDF]

, 2010
Secondary Enrichment of Copper at the Madison Gold Skarn Deposit, Silver Star District, Montana. This paper focuses on the chemical reactions responsible for secondary enrichment of copper...we argue that most of the secondary Cu enrichment occurred ...
Everett, Dan, Gammons, Christopher H., Sotendahl, Jill   +2 more
core   +1 more source

Sediment‐hosted disseminated gold mineralization at the Gegalaw deposit in Central Myanmar

Resource Geology, Volume 74, Issue 1, January‐December 2024.
The Gegalaw Au deposit is hosted mainly by framboidal pyrite‐rich carbonaceous and calcareous shale of the Eocene Male Formation. The orebodies are silicified breccia occurring along the NE‐trending secondary faults associated with the major N‐trending Sagaing Fault.
June Born Born, Yasushi Watanabe, Takuya Echigo, Patthana Bounliyong, Carmela Alen J. Tupaz, Shogo Aoki, Yoshiaki Kon   +6 more
wiley   +1 more source

Pleistocene cold climate groundwater silicification, Jbel Ghassoul region, Missour Basin, Morocco [PDF]

, 2014
International audienceSurficial silicifications have been long considered to be indicative of warm and dry climates. Here we describe various forms of supergene silicification in a Miocene lacustrine sequence in the Missour Basin near Jbel Ghassoul ...
Antony, Milnes, Ben Brahim, Mohamed, Thiry, Médard   +2 more
core   +2 more sources

RED JASPEROIDS FROM THE AREA OF THE UKRAINIAN ANTARCTIC RESEARCH STATION

Geologìčnij žurnal (Geological Journal)
Red jasper-like rocks from the area of the Akademik Vernadsky Station are known since the time of the first Ukrainian Antarctic expeditions. But until now, all the published information about them was limited to only one brief mention in the abstract of the report by Mytrokhyn and Bakhmutov (2017). This article summarizes all available data about these
O.V. Mytrokhyn, V.G. Bakhmutov, V.R. Morozenko, A.Y. Mashyrova, А.R. Kryzhanovska, R.S. Borovko   +5 more
openaire   +3 more sources

Major ore deposits in the Kozuf metallogenic area, R. Macedonia [PDF]

, 2014
The productive ore mineralization within the Kozuf metallogenic area, mainly, has been related to the Alpine metallogenic epoch while spatial and temporal has been spread during the Cretaceous stage and Pliocene period.
Serafimovski, Todor, Stefanova, Violeta, Tasev, Goran   +2 more
core  

Sm-Nd isochron age of the calcite from shewushan carlin-type gold deposit in the middle-lower yangtze metallogenic belt, eastern China

Frontiers in Earth Science
The Shewushan gold deposit, situated in the western extension of Edongnan, marks the westernmost point of the Middle-Lower Yangtze Metallogenic Belt, is an important iron and copper mineralization area in the Middle-Lower Yangtze Metallogenic Belt (MLYB).
Dongyong Lin, Rongke Xu, Xin Chen, Pengjie Cai, Shunli Zheng, Junzhen Yu, Jia Liu, Wenyang Du, Minfang Wang, Xingying Xu   +9 more
doaj   +1 more source

Investigation of Metal and Organic Contaminant Distributions and Sedimentation Rates in Backwater Lakes along the Illinois River [PDF]

, 2008
Systematic sub-sampling of sediment cores in sections of uniform thickness is necessary in order to evaluate historic changes in sediment quality, to determine the vertical extent of contamination, and to measure sedimentation rates.
Cahill, Richard A., Salmon, Gary L., Slowikowski, James A.   +2 more
core  

300 Million years of episodic hydrothermal activity: stable isotope evidence from hydrothermal rocks of the Eastern Iberian Central System [PDF]

, 2000
The Eastern Iberian Central System has abundant ore showings hosted by a wide variety of hydrothermal rocks; they include Sn-W, Fe and Zn-(W) calcic and magnesian skarns, shear zone- and episyenitehosted Cu-Zn-Sn-W orebodies, Cu-W-Sn greisens and W-(
Casquet, César, Delgado Huertas, Antonio, Galindo Francisco, Mª del Carmen, Tornos Arroyo, Fernando   +3 more
core   +2 more sources