isograd


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isograd

[′ī·sə‚grad]
(geology)
A line on a map joining those rocks comprising the same metamorphic grade.
References in periodicals archive ?
The sharp offset in the andalusite-in isograd assists mapping the stratigraphic contact within the metamorphic aureole.
Metamorphic reactions and isograds related to this intrusion were documented by Jamieson et al.
The contact aureole of the South Mountain Batholith in Halifax, Nova Scotia: geology, mineral assemblages, and isograds.
Folding of metamorphic isograd surfaces above a footwall ramp would account for the observed trends.
DELINEATING THE EFFECTS OF LATE PALEOZOIC DEFORMATION OF MIDDLE PALEOZOIC METAMORPHIC ISOGRADS WITH GEOTHERMOBAROMETRY.
An isograd map for gold, copper, molybdenum, and silver will be constructed from this data.