The northern part lies in a hilly area where the geologic substrate is pelitic schist
of the Precambrian "flyschoid series" (Orapu schist of Armina series [9, 10]).
The exhalative system is contained within what has been interpreted as a eugeosynclinal assemblage comprising marble, pelitic schist
, quartz schist, quartzite, itabirite, amphibolites, and a basal congolomerate or dolomite.
0 W/m K, magma heat capacity of 1800 J/kg K (Murase and Mcbirney, 1973; Clauser and Huenges, 1995; Waples and Waples, 2004), an initial local geothermal gradient inside the magma body of 20 [degrees]C/km, a near surface geothermal gradient of 25 [degrees]C/km, a closed simple conductive cooling magmatic system, and host rock consisting of pelitic schist with density of2770 kg/m3, conductivity of 2.
When semipelitic schist and serpentinite country rocks are considered as the country rock instead of pelitic schist, the disturbance of the local geotherm behaves differently.
The Bugalagrande Group is composed of chlorite and actinolite schists interlayered with pelitic schists
and quartzites, while El Rosario Complex consists of amphibolites and garnet amphibolites with weak- to well-developed foliation.
In this work we document the occurrence of Fe-rich staurolite in pelitic schists of the Silgara Formation (Santander Massif).
Fieldwork was primarily focused on localities with staurolite in pelitic schists from the Silgara Formation as previously reported (Rios et al.
The lithology changes northeastward from quartz-rich pelitic schists (southwest) to feldspar-rich semipelitic schists (northeast).
The evolution of the Cycladic subduction complex: constraining p-t-t path geometry from compositional zoning and mineral inclusions within garnet in pelitic schists from Syros, Cyclades, Greece.
A detailed study of morphology and chemistry of garnet crystal with suggestion of new subdivisions: data from pelitic schists, hornfels and aplites of Hamedan Region, Iran.
The H2O released from the dehydration of pelitic schists probably infiltrated the calcareous rocks promoting decarbonization, which can explain the transformation of forsterite to Ti-clinohumite.
Nonetheless, Figure 14 shows a preliminary model of the metasomatic process that probably affected the Cienaga Marbles, which include the following steps: (1) H2O-rich fluid by the dehydration of surrounding pelitic schists infiltrated by fractures and discontinuities into carbonate layers; (2) infiltrated H2O-rich fluid decreased decarbonization temperatures, promoting decarbonization reactions in carbonate layers; (3) H2O-rich fluid carried several chemical elements.