metasediment

(redirected from Metasedimentary)

metasediment

[¦med·ə′sed·ə·mənt]
(geology)
A sediment or sedimentary rock which shows evidence of metamorphism.
(petrology)
Metamorphic rock formed from sedimentary rock.
References in periodicals archive ?
Describing the geological setting of the project, the Company stated that the area is similar to the prolific Sadiola and Loulo gold districts in adjacent Mali, being underlain by highly prospective, Birimian-aged metasedimentary, volcanic and intrusive rocks along a seven kilometre strike length of the Senegal-Mali Shear Zone.
The metasedimentary and mafic metavolcanic (amphibolite) rocks of the area are strongly deformed and contain a penetrative fabric oriented northeast with near-vertical dip.
This program follows up on the Company's 2006 first phase of drilling on the Saskatoon Lake Conductor (SLC) which intersected unconformity-related alteration and graphitic metasedimentary rocks in the basement - features associated with unconformity type uranium deposits.
high, and intrudes siliceous metasedimentary rocks and amphibolite.
The Meguma terrane consists predominantly of Lower Paleozoic metasedimentary and volcanic rocks that are intruded by Late Devonian metaluminous and peraluminous granite (Clarke et al.
The veins cut a number of rock types including Jurassic granite and sedimentary and metasedimentary rocks of Cambrian age intruded by and partially covered by a variety of Tertiary rhyolitic intrusions and volcanic rocks.
Notable features which stand out on the image are: 1) a central belt underlying most of Alexandria's claims, of magnetically variable rocks (colored orange, red, and pink on the image) comprised of mafic-felsic Upper Malartic Group volcanic rocks and concordant gabbro and granitic sills; 2) a north belt of lower overall magnetic intensity (mostly blue colored) underlain by the ultramafic-felsic volcanic rocks of the Lower Malartic Group, and 3) a southern belt of metasedimentary rocks of the Pontiac Group, also of lower overall magnetic intensity.
39]Ar ages from mica in plutonic and metasedimentary units and shear zones in the area (e.
In 1998, drill samples from similarly altered metasedimentary and volcanic rocks 600 metres to the west assayed 3g/t over 3m at shallow depths.
The Project is underlain by rocks of the Yukon-Tanana Terrane consisting of Paleozoic metavolcanic and metasedimentary rocks of the Cleary Sequence and Fairbanks Schist, which are in thrust contact and interleaved with eclogite and amphibolite facies rocks of the Chatanika Terrane.
Although brittle reactivation of early Norumbega ductile shear zones has been documented in both metasedimentary (Ludman 1998) and granitic (Ludman and Gibbons 1999) rocks, this is the first attempt to detail the history and nature of fault reactivation and to investigate the dynamics and stress fields accompanying those episodes.
It corresponds to a sheared contact between intrusive and metasedimentary rocks.