Muscovite-garnet granites in the Mojave Desert: relation to crustal structure of the cretaceous arc: comment and reply
Article Abstract:
Miller, Glazner and Crowe (1996) examined similarities of the isotopic data on a diffuse belt of Late Cretaceous muscovite +/- granites in the western Mojave Desert with the metagraywacke schists of the Pelona-Orocopia-Rand schists. They proposed that the metagraywacke schists serve as the melt sources for the muscovite-garnet granites, thus suggesting that the emplacement of the Pelona-Orocopia-Rand schists would have to have taken place before Late Cretaceous magmatism and not in early Tertiary time. An alternative to this interpretation is presented and criticized by Miller et al.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Late-stage sinking of plutons; comment and reply
Article Abstract:
Glazner and Miller (1997) presented a study suggesting that plutons may sink immediately after crystallization and drag down their host rock. Although there is a fair amount of evidence present for downward flow of host rock around plutons, no evidence may be seen for pluton sinking. However, it is suggested that the downward flow of host rock is a natural process during magma ascent and that it transfers host rock down toward the region of growing crustal roots beneath arcs.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Comment and reply
Article Abstract:
An interpretation of the tectonic evolution of the Miocene extension in Southern California is criticized in terms of the extent and origin of the extension. However, it is explained that the negative reactions are a result of misinterpreting both the paper and existing data. In particular, misunderstanding lies in the influence of vertical axis rotations in the tectonic origin of the Miocene extension during the later part of the Cenezoic era.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Testing the marine and continental fossil records: comment and reply. Middle Cretaceous reef collapse linked to ocean heat transport: comment and reply
- Abstracts: Phase relations in the phlogopite-apatite system at 20 kbar; implications for the role of fluorine in mantle melting
- Abstracts: The partitioning of copper between silicate melts and two-phase aqueous fluids: an experimental investigation at 1 kbar, 800 degrees C and 0.5 kbar, 850 degrees C
- Abstracts: Introduction: experimental approaches to testing adaptation. Testing adaptationism: a comment on Orzack and Sober