Results 81 to 90 of about 6,814 (200)

Internal vs. external forcing in shallow marine diatreme formation: a case study from the Iblean Mountains (SE-Siciliy, Central Mediterranean) [PDF]

, 2009
A model of diatreme evolution in a shallow marine setting is based on a multi-disciplinary analysis of diatremes in the Iblean Mountains (Sicily). The approach includes stratigraphic, volcanological, structural, petrologic and compositional data.
Schmincke, Hans-Ulrich, Suiting, Ines
core   +1 more source

The Characteristics and Species Identification of Garnets Hosted in the Kimberlites from Wafangdian, Liaoning Province

Yankuang ceshi, 2013
The garnets in the kimberlites of the Wafangdian diamond mining area from Liaoning province have previously been identified as pyrope. In order to define the types of the complicated color garnets in Wafangdian, a systematic sampling and analysis of the ...
CHI Guang-cheng, LI Guo-wu, XIAO Gang, CHEN Ying-fei, WU Yue, WANG Yin-fu, HU Jian-fei   +6 more
doaj  

About primary diamondiferousness of ancient platforms

Мінеральні ресурси України, 2016
As a result of carried out research and summary of the materials on specific features of diamonds, on the example of the Siberian platform, conclusions were made that indications exist at all levels of their location: from kimberlite – provinces, sub ...
M. M. Zinchuk, V. I. Koptil
doaj  

Density inhomogeneity of the earth's crust along the latitudinal zones of the faults of the Ukrainian shield and the Dnieper-Donets basin

Геофизический журнал, 2012
Characteristic of density distribution along latitudinal fault zones and estimated profiles has been given. Possibility has been found of north-south inclination of each of latitudinal fault zones.
V. I. Starostenko, P. Ya. Kuprienko, I. B. Makarenko, O.V. Legostaeva, A.S. Savchenko   +4 more
doaj   +1 more source

Widespread PREMA in the upper mantle indicated by low-degree basaltic melts. [PDF]

Nat Commun, 2023
Cai R, Liu J, Pearson DG, Giuliani A, van Keken PE, Oesch S.   +5 more
europepmc   +1 more source

The formation of ore mineral deposits on the Moon: A feasibility study [PDF]

Most of the ore deposits on Earth are the direct result of formation by hydrothermal solutions. Analogous mineral concentrations do not occur on the Moon, however, because of the absence of water.
Lu, Fengxiang, Taylor, Lawrence A.
core   +1 more source

Rift-induced disruption of cratonic keels drives kimberlite volcanism. [PDF]

Nature, 2023
Gernon TM, Jones SM, Brune S, Hincks TK, Palmer MR, Schumacher JC, Primiceri RM, Field M, Griffin WL, O'Reilly SY, Keir D, Spencer CJ, Merdith AS, Glerum A.   +13 more
europepmc   +1 more source

Thermal and mechanical structure of the upper mantle: A comparison between continental and oceanic models [PDF]

Temperature, velocity, and viscosity profiles for coupled thermal and mechanical models of the upper mantle beneath continental shields and old ocean basins show that under the continents, both tectonic plates and the asthenosphere, are thicker than they
Froidevaux, C., Schubert, G., Yuen, D. A.   +2 more
core   +1 more source

Mapping curie point depth of the west African Craton from satellite magnetic data and its implication for diamond exploration [PDF]

, 2015
The main objective of this work is to map the Curie depth of the West African Craton (WAC) using satellite magnetic data with the aim to provide first order evaluation, within this vast territory, for the spatial association between Curie-depth surface ...
Allek, K., Bendiab, F., Boubaya, D., Bouguern, A., Khalifa, M.   +4 more
core  

Secular Variation in the North American Kimberlite Formation: The Variable Connection to LLSVPs

Geochemistry, Geophysics, Geosystems
Kimberlites are rare and perplexing igneous rocks that may represent the deepest‐sourced melt type extracted from within the Earth's mantle, and their origin may be associated with Large Low Shear Velocity Provinces (LLSVPs) along the core‐mantle ...
C. Adam, P. D. Kempton
doaj   +1 more source