Results 91 to 100 of about 2,520 (206)

Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia

, 2016
: We have performed petrographic and spectroscopic studies of brown diamonds from an eclogite xenolith from the Udachnaya pipe (Yakutia, Russia). Brown diamonds are randomly intermixed with colorless ones in the rock and often located at the grain ...
Stepanov, Aleksandr, De Gussem, Kris, Korsakov, Andrey V, Nadolinniy, Vladimir A., Vandenbeele, Peter, Yuryeva, Olga P., Perraki, Maria   +6 more
core   +1 more source

High geomagnetic field intensity recorded by anorthosite xenoliths requires a strongly powered late Mesoproterozoic geodynamo. [PDF]

Proc Natl Acad Sci U S A, 2022
Zhang Y, Swanson-Hysell NL, Avery MS, Fu RR.   +3 more
europepmc   +1 more source

A new mantle xenolith locality from Simien shield volcano, NW Ethiopia

, 2009
International audienceThin-section observations and electron probe analyses, and trace element data are reported from a new mantle xenolith hosted in Miocene alkali basalt from the western flank of Simien shield volcano, Ethiopia.
Ayalew, Dereje, Bastien, Florence, Kieffer, Bruno, Arndt, Nick, Yirgu, Gezahegn   +4 more
core   +1 more source

U-Pb SHRIMP and Sm-Nd geochronology of the Silvânia Volcanics and Jurubatuba Granite: juvenile Paleoproterozoic crust in the basement of the Neoproterozoic Brasília Belt, Goiás, central Brazil

Anais da Academia Brasileira de Ciências, 2001
U-Pb SHRIMP and Sm-Nd isotopic ages were determined for felsic metavolcanic rocks from the Silvânia Sequence and Jurubatuba Granite in the central part of the Brasília Belt.
FISCHEL DANIELLE P., PIMENTEL MÁRCIO M., FUCK REINHARDT A., ARMSTRONG RICHARD   +3 more
doaj  

Geochemical signatures and melt inclusion evidence in peridotite xenoliths of Sinsanri, South Korea

Open Geosciences
Jeju Island, located in South Korea, is a Cenozoic intraplate volcanic feature in the East Asian region. The Sinsanri area on Jeju Island is well-known for its rich presence of xenoliths, making it a key site for finding these geological features ...
Khant Naing Aung, Lim Chungwan, Ryu Han-Sun, Moon Jinah, Kim Heejung   +4 more
doaj   +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

Potassium distribution and isotope composition in the lithospheric mantle in relation to global Earth's reservoirs. [PDF]

Geochim Cosmochim Acta, 2021
Ionov DA, Wang K.
europepmc   +1 more source

Considerações acerca de um xenólito ocorrente em corpo ultrabásico de Liberdade, MG [PDF]

Anuário do Instituto de Geociências, 1977
Maria Suzana Pessoa de Souza, Pedro Victor Zalán   +1 more
doaj  

Evidence for oxygen-conserving diamond formation in redox-buffered subducted oceanic crust sampled as eclogite. [PDF]

Nat Commun, 2022
Aulbach S, Stachel T.
europepmc   +1 more source

PETROLOGIC AND GEOTHERMAL PROFILE OF THE LITHOSPHERE BENEATH KILBOURNE HOLE BASED ON GEOCHEMICAL ANALYSIS OF A MANTLE AND CRUSTAL XENOLITH [PDF]

This study describes the geochemistry of an upper mantle and mid-crustal xenolith, both collected at Kilbourne Hole New Mexico. The mantle xenolith phase assemblage consists of forsterite, diopside, spinel, and enstatite.
Samano, Jena
core