Results 51 to 60 of about 9,924 (222)

MINERAL CHEMISTRY OF OPHIOLITIC GABBROS WITHIN CENTRAL ANATOLIA: HIRFANLI DAM GABBROS

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2019
The tectonic evolution of the magmatic rocks the Central Anatolia (CA) began at the late Mesozoic with closure of Neotethys in the region. The Central Anatolia has experienced several magmatic events including felsic and mafic intrusions originated from collisional and/or extensional tectonic events. The felsic magmatism of the CA are well reported and
Koralay, Tamer, Kadıoğlu, Yusuf Ka?an, Deniz, Kıymet, Güllü, Bahattin   +3 more
openaire   +2 more sources

The petrology and genesis of the Paleoproterozoic mafic intrusion-hosted Co-Cu-Ni deposit at Hietakero, NW Finnish Lapland [PDF]

Bulletin of the Geological Society of Finland, 2018
Cobalt is a highly sought-after metal due to its economic importance in many hightech applications. It is mainly obtained from sedimentary-hosted Cu-Co deposits and magmatic Ni-Cu deposits as a by-product. We describe a recently discovered Co-enriched Cu-
Konnunaho, J.P., Hanski, E.J., Karinen, T.T., Lahaye, Y., Makkonen, H.V.   +4 more
doaj   +1 more source

Drilling to Gabbro in Intact Ocean Crust [PDF]

Science, 2006
Sampling an intact sequence of oceanic crust through lavas, dikes, and gabbros is necessary to advance the understanding of the formation and evolution of crust formed at mid-ocean ridges, but it has been an elusive goal of scientific ocean drilling for decades.
D. S. WILSON, D. A. H. TEAGLE, J. C. ALT, N. R. BANERJEE, S. UMINO, S. MIYASHITA, G. D. ACTON, R. ANMA, S. R. BARR, A. BELGHOUL, J. CARLUT, D. M. CHRISTIE, R. M. COGGON, K. M. COOPER, C. CORDIER, L. CRISPINI, S. RODRIGUEZ DURAND, F. EINAUDI, L. GALLI, Y. J. GAO, J. GELDMACHER, L. A. GILBERT, N. W. HAYMAN, E. HERRERO BERVERA, N. HIRANO, S. HOLTER, S. INGLE, S. J. JIANG, U. KALBERKAMP, M. KERNEKLIAN, J. KOEPKE, C. LAVERNE, H. L. L. VASQUEZ, J. MACLENNAN, S. MORGAN, N. NEO, H. J. NICHOLS, S. H. PARK, M. K. REICHOW, T. SAKUYAMA, T. SANO, R. SANDWELL, B. SCHEIBNER, C. E. SMITH DUQUE, S. A. SWIFT, P. TARTAROTTI, A. A. TIKKU, M. TOMINAGA, E. A. VELOSO, T. YAMASAKI, S. YAMAZAKI, C. ZIEGLER   +51 more
openaire   +3 more sources

Experimental Evaluation and Optimisation of Sealed‐Tube Combustion Methods for Silicate Nitrogen Extraction

Rapid Communications in Mass Spectrometry, Volume 41, Issue 1, 15 January 2027.
ABSTRACT Rationale Nitrogen (N) abundance and isotopic compositions in silicate rocks are commonly measured by sealed‐tube continuous‐flow isotope ratio mass spectrometry (CF‐IRMS), but combustion protocols vary widely. It remains uncertain how the quality of data obtained from different published methods compares for differing sample types. Methods To
Fawn S. M. Holland, Sami Mikhail, Kirsten W. Y. Wong, Abu Saeed Baidya, Eva E. Stüeken   +4 more
wiley   +1 more source

Geochemical Characteristics of Metasediment—Rich Lower Continental Crust: Insights From the Ivrea‐Verbano Zone (DIVE Drilling Project, ICDP Expedition 5071, Val d’Ossola, Italy)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 11, November 2026.
Abstract Whole‐rock geochemical data from two drill cores obtained through the ICDP (International Continental Scientific Drilling Program) funded Drilling the Ivrea‐Verbano Zone (IVZ) (DIVE) project: 5071_1_B (Ornavasso) and 5071_1_A (Megolo), provide new insights into the composition of the lower continental crust (LCC) in the IVZ. Borehole 5071_1_B (
Alexia Secrétan, Othmar Müntener, Benjamin Klein, Sarah Degen, Luca Pacchiega, Junjian Li, Mattia Pistone, Kim Lemke, György Hetényi, Jörg Hermann   +9 more
wiley   +1 more source

Lanes Island - Older gabbro cut by granite-gabbro mixing zone.

, 2019
Lanes Island - Older gabbro cut by granite-gabbro mixing zone.https://digitalmaine.com/mgs_geologic_field_photos/6183/thumbnail ...
Marvinney, Robert G
core  

Constraints on the Timing and Lower Crustal Accretion at the Schulz Massif, Mohns Ridge, Arctic Mid Ocean Ridges

Geochemistry, Geophysics, Geosystems
The ultraslow‐spreading Mohns Ridge is a key supersegment of the Arctic Mid‐Ocean system, where it represents a boundary between the Jan Mayen hotspot in the south and the highly anomalous Knipovich Ridge to the north.
A. Bjerga, H. H. Stubseid, L. E. R. Pedersen, F. Corfu, M. Whitehouse, R. B. Pedersen   +5 more
doaj   +1 more source

The Aurora Vent Field at the Transition From Magmatic Accretion to Tectonic Extension on Gakkel Ridge: Constraints From Microseismicity and Aeromagnetic Observations

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The Aurora hydrothermal vent field (AVF) is the first confirmed active vent system on the Arctic Ocean seafloor, located at the western end of the ultraslow spreading Gakkel Ridge. It marks a distinctive endmember among ridge‐axis hydrothermal systems, where volcanic construction and ultramafic influence co‐exist.
Matthias Pilot, Mechita C. Schmidt‐Aursch, Graeme Eagles, Vera Schlindwein   +3 more
wiley   +1 more source

Lanes Island - Older gabbro intruded by granite-gabbro mixing zone.

, 2019
Lanes Island - Older gabbro intruded by granite-gabbro mixing zone.https://digitalmaine.com/mgs_geologic_field_photos/6182/thumbnail ...
Marvinney, Robert G
core  

Co-mingled gabbro-granite (Ollie Gates)

, 2019
Co-mingled gabbro-granite (Ollie Gates)https://digitalmaine.com/mgs_geologic_field_photos/6229/thumbnail ...

core   +1 more source