Results 181 to 190 of about 1,607 (230)
Some of the next articles are maybe not open access.
Localised non-migmatitic UHT domains within thermally buffered migmatites
Goldschmidt2023 abstracts, 2023Samantha March +3 more
openaire +1 more source
1985
The migmatite problem has always been interrelated with the granite problem. The long and sometimes heated debates of the granite controversy between ‘magmatists’ and ‘transformationists’ were ended, for the time being, by Tuttle and Bowen (1958). Their study also convinced many geologists that migmatites were the product of simple partial melting and ...
openaire +1 more source
The migmatite problem has always been interrelated with the granite problem. The long and sometimes heated debates of the granite controversy between ‘magmatists’ and ‘transformationists’ were ended, for the time being, by Tuttle and Bowen (1958). Their study also convinced many geologists that migmatites were the product of simple partial melting and ...
openaire +1 more source
1985
The Moines (summaries in Johnstone, 1975; Johnson et al., 1979; Johnson, 1983) are a series of late Precambrian metasediments which have undergone both ‘Grenvillian’ (c. 1000 Ma—Brook et al., 1976) and Caledonian (490–440 Ma—Fettes, 1979) amphibolite facies metamorphism. The effects of tectonic reworking and renewed migmatization on rocks of an earlier
openaire +1 more source
The Moines (summaries in Johnstone, 1975; Johnson et al., 1979; Johnson, 1983) are a series of late Precambrian metasediments which have undergone both ‘Grenvillian’ (c. 1000 Ma—Brook et al., 1976) and Caledonian (490–440 Ma—Fettes, 1979) amphibolite facies metamorphism. The effects of tectonic reworking and renewed migmatization on rocks of an earlier
openaire +1 more source
Migmatite occurrences in New England
1985The high-grade metamorphic belts of the northern Appalachians in New England comprise one of the classic migmatite terrains of the world. Migmatites occur within the highest-grade metamorphic zones in roughly linearnorth-south belts running from Long Island Sound to near the Canadian border—a distance of about 500 km (Figure 6.1).
openaire +1 more source
Migmatites of the Sawatch Range, Colorado
The Journal of Geology, 1935The crystalline core of the Sawatch Range is composed of coarse schist and gneiss, largely of sedimentary origin. Two distinct periods of batholithic intrusions occurred in pre-Cambrian time. Wide zones of mixed supercrustal and granitic material border the outcrops of the batholiths and show gradational facies on one side into the sedimentary schists ...
openaire +1 more source
Development of Migmatite Structure: Overprinting
1999Regardless of the mechanism involved in the deformation, the basic principle regarding refold relationships stated earlier always applies, namely that where overprinting (Sander’s ‘Uberpragung’, 1911) has taken place, the structural features that are overprinted are earlier than those that overprint them.
openaire +1 more source