Results 101 to 110 of about 7,253 (231)

Revised three-dimensional geometry of the platiniferous Hekeia Gabbro, Longwood Range, Southland [PDF]

open access: yes, 2019
The Hekeia Gabbro in the Longwood Range of Southland is prospective for platinum group element mineralisation. Recently acquired geological and isotopic data, combined with reinterpreted aeromagnetic data, provide new constraints on the three dimensional
Fabio Caratori Tontini   +2 more
core   +1 more source

GEOCHRONOLOGY OF ALKALINE ROCKS FROM THE BURPALA MASSIF (NORTHERN PRIBAIKALYE): NEW U-Pb DATA

open access: yesГеодинамика и тектонофизика
Geochronological studies have been made on the main types of rocks from the Burpala alkaline massif and two gabbro and gabbro-diorite dikes located nearby.
I. А. Izbrodin   +8 more
doaj   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1213-1242, July 2026.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark   +8 more
wiley   +1 more source

Granite-gabbro mixing near Norton Pt. (8) [PDF]

open access: yes, 2019
Granite-gabbro mixing near Norton Pt.
Marvinney, Robert G
core  

LA-ICP-MS Zircon U-Pb Age and Geochemistry of Gabbros from the Huanghuatan Copper-Nickel Deposit, Inner Mongolia

open access: yesYankuang ceshi, 2016
A series of ultrabasic-acid igneous rocks are distributed in the belt of Urad houqi-Damaoqi-Siziwangqi, in middle Inner Mongolia. The formation age and geochemistry of these rocks can provide basic geological information for the metallogenic regularities
ZHAO Ze-lin   +7 more
doaj   +1 more source

Geology of the central uplift of the Kamestastin Lake impact structure, Labrador, Canada

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1417-1433, July 2026.
Abstract The ~28 km Kamestastin (Mistastin) Lake impact structure is a relatively well‐preserved and well‐exposed complex impact structure. The central uplift of this structure is accessible as two islands in the middle of Kamestastin Lake. We present an updated, detailed geological map and description of Horseshoe and Bullseye islands that provides ...
A. C. Singleton, G. R. Osinski
wiley   +1 more source

Structural-temporal approach for dynamic strength characterization of gabbro-diabase [PDF]

open access: yes, 2015
This paper presents some of the results of dynamic compression, splitting and direct-tensile tests of gabbro-diabase using two split Hopkinson bar apparatus.
A. Evstifeev   +7 more
core   +1 more source

Analytical assessment of Ukraine’s decorative stone reserves by rock type, colour, and degree of geological exploration

open access: yesТехнічна інженерія
The article presents an analytical assessment of Ukraine’s decorative stone reserves by rock type, colour characteristics, and degree of geological exploration.
I.A. Piskun   +4 more
doaj   +1 more source

Anorthosite-gabbro-granophyte relationships, Mount Sheridan area, Oklahoma [PDF]

open access: yes, 1975
Field work, phase analysis by microprobe, petrography, and oxygen isotope analysis have been undertaken in an effort to establish the relationships among the anorthositic, gabbroic, and granophyric rocks of the Mount Sheridan area in southwestern ...
Thornton, Edward Clifford
core   +1 more source

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