Results 11 to 20 of about 7,625 (261)
The alkaline lacustrine source rocks in the lower Permian Fengcheng Formation in the Mahu Sag, Junggar Basin, China, exhibit significant heterogeneity. However, most previous studies have focused on the vertical variability of the source rocks, and the ...
Baoli Xiang +3 more
doaj +1 more source
Rare Earth Elements (REE) + Niobium (Nb) + Uranium (U) + Zircon (Zr) + Lithium (Li) formations are investigated which are related with alkaline Upper Cretaceous - Lower Paleocene Kuluncak Syenitoid that settled by cutting the Kuluncak ophiolite in the ...
Okan Pulat +2 more
doaj +1 more source
The Encantada Granite: registration of a peraluminous intrusion in the Rondonian Province - San Ignacio, in SW Amazonic Craton, Mato Grosso, Brazil [PDF]
The Encantada Granite occurs on the extreme southwest of the state of Mato Grosso, SW of the Amazonian Craton, near the border of Brasil/Bolívia. It corresponds to an body oriented to NNW direction that intruded metasedimentary and metavolcanic rocks ...
Brena Verginassi do Nascimento +2 more
doaj +1 more source
Alkali magmatism on Mars: an unexpected diversity
Despite an apparent north/south topographic dichotomy that formed ${>}$4.0 Ga, the young Martian meteorites (${
Sautter, Violaine, Payre, Valerie
doaj +1 more source
Magmatism of northwest of Takestan: The product of asymmetric caldera collapse [PDF]
One of the main products of caldera collapses is ignimbrite, and there is a direct relationship between the volume of ignimbrite and caldera dimensions.
Batool Nemati +2 more
doaj +1 more source
RARE EARTH MINERALS IN ALKALINE AND SUBALKALINE ROCKS OF THE BALBUK COMPLEX (SOUTH URALS) [PDF]
Mineral composition of alkaline and subalkaline rocks of the Balbuk complex (South Urals) is characterized. The major REE minerals are monazite-(Ce), allanite-(Ce), and rhabdophane-(Ce).
E.P. Makagonov, V.A. Kotlyarov
doaj
Alkaline lacustrine deposits are known for their high primary productivity, unique aquatic environments, and sedimentary patterns, which are conducive to the formation and preservation of organic matter.
Minjie Ni +3 more
doaj +1 more source
The late Paleozoic magmatic rocks are widely distributed in the Mandakh area which is located in the Gurvansaikhan and Manlai terrains, where porphyry Cu deposits occur.
Undarmaa Batsaikhan +3 more
doaj +1 more source
The distribution in the geological section of two groups of sedimentary rocks, siliceous and carbonate rocks of different composition — has been examined.
V. G. Kuznetsov
doaj +1 more source
Sulphur isotopes of alkaline magmas unlock long-term records of crustal recycling on Earth
Sulphur isotopes track recycling of subducted crustal material, yet few igneous rocks preserve these signals over Earth history. Here, the authors investigate a billion-year-old alkaline province in Greenland and are able to reconstruct a recycled mantle
William Hutchison +9 more
doaj +1 more source

