Jurassic metaconglomerate at Los Peñasquitos Canyon Preserve, San Diego County, CaliforniaPolymict metaconglomerate, sold as "Marinace Green Granite," from Bahia, Brazil. This rock is dominated by pebbles & granules of granite, gneiss, and mafic igneous rocks. Some clasts have been partially epidotized. The matrix is dominated by epidote (green), quartz, and tremolite.
Metaconglomerate is a rock type which originated from conglomerate after undergoing metamorphism. Conglomerate is easily identifiable by the pebbles or larger clasts in a matrix of sand, silt, or clay. Metaconglomerate looks similar to conglomerate, although sometimes the clasts are deformed. The cement matrix of conglomerate is not as durable as the grains, and hence when broken, conglomerate breaks around the grains. Metaconglomerate, however, breaks through the grains, as the cement has recrystallized and may be as durable as the clasts.[1]
Foliated metaconglomerate is created under the same metamorphic conditions that produce slate or phyllite, but with the parent rock (protolith) being conglomerate, rather than clay.[2]
The metaconglomerates of the Jack Hills of Western Australia are the source rocks for much of the detrital zircons that have been dated to be as old as 4.4 billion years.[3][4]
^Metaconglomerate
^Essentials of Geology, 3rd Ed, Stephen Marshak
^VALLEY, John W.1, CAVOSIE, A.J., WILDE, S.A., GRANT, M., and LIU, Dunyi, JACK HILLS METACONGLOMERATE: EVIDENCE OF EARLY AND LATE ARCHEAN HYDROSPHERE, The Geological Society of America, 2002 Denver Annual Meeting http://gsa.confex.com/gsa/2002AM/finalprogram/abstract_39602.htm
^ftp://rock.geosociety.org/pub/reposit/2002/2002034.pdf from: Peck, W.H., Valley, J.W., Wilde, S.A., and Graham, C.M., 2001, Oxygen isotope ratios and rare earth elements in 3.3 to 4.4 ga zircons: Ion microprobe evidence for high δ18O continental crust in the early Archean: Geochimica et Cosmochimica Acta, v. 65, p. 4215-4229.
Metaconglomerate is a rock type which originated from conglomerate after undergoing metamorphism. Conglomerate is easily identifiable by the pebbles or...
consists predominately of massive, coarse-grained metagreywacke and metaconglomerate. The lower northern flanks of Clingmans Dome are underlain by thick...
whose protolith is known to be a conglomerate will be described as a metaconglomerate. For a metamorphic rock to be classified in this manner, the protolith...
slate and schist that contain minor amounts of metavolcanic rocks, metaconglomerates, and quartzite. These rocks are intruded by metamorphosed gabbro,...
Mountains Cardamom Mountains (Thailand) Show map of Thailand Country Cambodia and Thailand Geology Age of rock Cambrian Type of rock Metaconglomerate...
not exceed the Curie temperature which is 585 °C for magnetite. The metaconglomerates at Erawondoo Hill did not experience temperature greater than 500 °C...
materials known from this site are: Basalt Basanite Metagraywacke and metaconglomerate Qurna is located near Thebes. It was an active site during the reign...
quartzite member. The conglomerate is a medium to dark gray quartz pebble metaconglomerate with minor quartzite beds, interpreted as braided alluvial deposits...
Maláguide thrust sheet include phyllite, metagreywacke, limestone, metaconglomerate. The Devonian and Early Carboniferous is represented by gray slates...
fine-grained light-brown to gray quartzite which often shows cross-bedding; metaconglomerate containing clasts up to 15 centimeters (6 in) or more in size; and...
quartzite, with some beds near the base of the formation composed of metaconglomerate. Crossbedding is found throughout the formation, and aluminosilicate...
and retreating multiple times. Ludden Peak is composed of hardened metaconglomerate. Ludden Peak in upper left Ludden Peak centered in the distance, viewed...
believed to be over 80% quartzite, with the rest mostly metaconglomerate. The metaconglomerate lenses are found throughout the formation but particularly...
is present as discontinuous slivers of metamorphic rocks, pelites, metaconglomerates and gneisses caught up within regional strike-slip oblique thrust...
amphibolite, but with lesser amounts of many other rock types, including metaconglomerate, phyllite, gneiss, and muscovite schist. Feldspathic schist and banded...
Capponi, Giovanni & Crispini, Laura & Meccheri, Marco. (1999), The metaconglomerates of the eastern Lanterman Range (northern Victoria Land, Antarctica):...
to buff quartz-muscovite schist with some inberbedded quartzite and metaconglomerate. which fills an inverted syncline in the northern Picuris Mountains...
Phyllites and Quartzites San Cristóbal Quartzites and Phyllites Susumuco Metaconglomerates and Phyllites Devonian Farallones Group Valle del Guatiquía Red Beds...
Resolution vessel. Capponi G., CRISPINI L. & Meccheri M. - 1999 - The metaconglomerates of the eastern Lanterman Range (northern Victoria Land, Antarctica):...
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