supracrustal rocks

supracrustal rocks

[¦sü·prə′krəst·əl ′räks]
(geology)
Rocks that overlie basement rock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Zone 2 comprises magnetically low-relief supracrustal rocks of the Lake Harbour Group, which are intruded by magnetite-bearing plutonic rocks and subsequently folded.
Good matches are evident between the Carrabassett and Ganderia supracrustal rocks with strong similarities at ~600 Ma and the common peak centered at ~1200 Ma.
Crustal evolution of the Svecofennian and Karelian domains during 2.1-1.79 Ga, with special emphasis on the geochemistry and origin of 1.93-1.91 Ga gneissic tonalites and associated supracrustal rocks in the Rautalampi area, central Finland.
Structurally, Bergslagen consists of an intrusive granite complex surrounded by supracrustal rocks; metasediments and metavolcanics that date to over 2,000 Ma and that form the host for the district's rich mineral resources.
Correlations between the two data types can be seen over the supracrustal rocks (labelled A and B on Fig.
The paper deals with the composition of metamorphosed supracrustal rocks, variation in their mineralogical composition, and regional and local estimates of metamorphic pressure-temperature (P-T) conditions and ages.
All of the supracrustal rocks on Fogo Island are openly folded about axial planes trending northeast and dipping about 65[degrees] to the south.