TY - JOUR
T1 - 40Ar/39Ar geochronology of mafic rocks from the granite-rhyolite terrane of southeastern Missouri
AU - Honda, Masahiko
AU - Sylvester, Paul J.
AU - Podosek, Frank A.
AU - Schulz, Klaus J.
PY - 1985/2
Y1 - 1985/2
N2 - The predominant 1480 Ma granites and rhyolites of the St. Francois Mountains, southeastern Missouri, are intruded by mafic rocks. A 40Ar-39Ar study of some of these, the Skrainka Mafic Group, indicates an age of ∼ 1240 Ma, significantly younger than the host rocks, significantly older than Grenville/Keweenawan age, and close to the age of similar rocks in Labrador.
AB - The predominant 1480 Ma granites and rhyolites of the St. Francois Mountains, southeastern Missouri, are intruded by mafic rocks. A 40Ar-39Ar study of some of these, the Skrainka Mafic Group, indicates an age of ∼ 1240 Ma, significantly younger than the host rocks, significantly older than Grenville/Keweenawan age, and close to the age of similar rocks in Labrador.
UR - http://www.scopus.com/inward/record.url?scp=0021890732&partnerID=8YFLogxK
U2 - 10.1016/0301-9268(85)90090-7
DO - 10.1016/0301-9268(85)90090-7
M3 - Article
AN - SCOPUS:0021890732
SN - 0301-9268
VL - 27
SP - 301
EP - 306
JO - Precambrian Research
JF - Precambrian Research
IS - 4
ER -