Results 101 to 110 of about 10,376 (220)

Kimberlitic olivine

, 2009
Kimberlite hosts two populations of olivine that are distinguished on the basis of grain size and morphology; the populations are commonly described genetically as xenocrysts and phenocrysts. Recent studies of zoning patterns in kimberlitic olivine phenocrysts have cast doubt on the actual origins of the smaller olivine crystals. Here, we elucidate the
openaire   +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

New Insights into the Concept of Ilmenite as an Indicator for Diamond Exploration, Based on Kimberlite Petrographic Analysis [PDF]

, 2017
This study presents results of the initial phase of the research project, "Kimberlites associated to the Lucapa structure, Angola (Africa)", within the framework of a multilateral agreement between the Faculty of Geology Universitat de Barcelona, the ...
Galí Medina, Salvador, 1949-, Melgarejo i Draper, Joan-Carles, Robles Cruz, Sandra Elvira, Watangua, M.   +3 more
core  

Perovskite-bearing crystal-controlled oxide-silicate mantle xenoliths: Resolution to controversial origins? [PDF]

Sci Adv, 2023
Haggerty SE.
europepmc   +1 more source

Creating Lakes from Open Pit Mines: Processes and Considerations, Emphasis on Northern Environments [PDF]

, 2009
Creating Lakes from Open Pit Mines: Processes and Considerations, Emphasis on Northern Environments. This document summarizes the literature of mining pit lakes (through 2007), with a particular focus on issues that are likely to be of special relevance ...
Castro, James M., Cott, Peter A., Gammons, Christopher H., Hanna, Bruce W., Harris, Les N.   +4 more
core   +1 more source

Sublithospheric diamond ages and the supercontinent cycle. [PDF]

Nature, 2023
Timmerman S, Stachel T, Koornneef JM, Smit KV, Harlou R, Nowell GM, Thomson AR, Kohn SC, Davies JHFL, Davies GR, Krebs MY, Zhang Q, Milne SEM, Harris JW, Kaminsky F, Zedgenizov D, Bulanova G, Smith CB, Cabral Neto I, Silveira FV, Burnham AD, Nestola F, Shirey SB, Walter MJ, Steele A, Pearson DG.   +25 more
europepmc   +1 more source

Perturbation of the deep-Earth carbon cycle in response to the Cambrian Explosion. [PDF]

Sci Adv, 2022
Giuliani A, Drysdale RN, Woodhead JD, Planavsky NJ, Phillips D, Hergt J, Griffin WL, Oesch S, Dalton H, Davies GR.   +9 more
europepmc   +1 more source

Five day mission plan to investigate the geology of the Marius Hills region of the moon [PDF]

Five-day mission plan to investigate geology of Marius Hills region of ...
Elston, D. P., Willingham, C. R.
core   +1 more source

A compilation and characterisation of lithics in kimberlite and common maar-diatremes and tephra ring deposits. [PDF]

Sci Rep, 2021
Fitzgerald MK, White JDL.
europepmc   +1 more source

Geological rhythms and cometary impacts [PDF]

Time series analysis reveals two dominant, long-term periodicities approximately equal to 32 and 260 million years in the known series of geological and biological upheavals during the Phanerozoic Eon.
Rampino, M. R., Strothers, R. B.
core   +1 more source