Dome-and-keel provinces formed during Paleoproterozoic orogenic collapse - core complexes, diapirs, or neither?: examples from the Quadrilatero Ferrifero and the Penokean orogen: reply
Article Abstract:
Daniel Holm, David Schneider and Daniel Lux question parts of the hypothesis that the internal portion of the Penokean belt in the Lake Superior, MI, is a reflection of a style of extensional tectonism that contrasts with that of Cenozoic Cordilleran metamorphic core complexes. Among other arguments to counter Holm et al's critique, the structural analysis of the region in question show that dome-border shear zones overprint regional east-west trending Penokean contractional structural fabric. Thus, the dome emplacement postdates Penokean contraction.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1998
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Dome-and-keel provinces formed during Paleoproterozoic orogenic collapse - core complexes, diapirs, or neither?: examples from the Quadrilatero Ferrifero and the Penokean orogen: comment
Article Abstract:
S. Marshak, D. Tinkham, F. Alkmim, H. Brueckner and T. Bornhorst in their article 'Dome-and-keel provinces formed during Paleoproterozoic orogenic collapse - core complexes, diapirs, or neither?: examples from the Quadrilatero Ferrifero and the Penokean orogen' hypothesize the origin of some traditional dome-and-keel structures from the Paleoprototerozoic period as features formed during occurrences of late to post-collisional crustal thinning. Some aspects of their argument are questioned and the arguments for such are discussed.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1998
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Postcollisional extension of the Caledonide orogen in Scandinavia; structural expressions and tectonic significance: comment and reply
Article Abstract:
A comment and a reply on the formation of the Caledonide oregen in Scandinavia is presented. The comment emphasizes the importance of data from Ofoten. Using this data, the Caledonide's deformational and metamorphic sequence is presented. The reply emphasizes the use of kinematic analysis used in combination with the practice of separation of geologic occurences in phases. Kinematics may be a more useful approach in analyzing the movements of mountains.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1993
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