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Research Activities
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The ACCRETE project
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Some Recent
Publications:
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1995
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The geological framework
of the ACCRETE seismic transect. M. L. Crawford and the ACCRETE science
team, EOS, Transactions American Geophysical Union, 76, F594.
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1998
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Structural
History of the crustal-scale Coast shear zone north of Portland Canal,
southeast Alaska and British Columbia. Klepeis,
K.A., Crawford, M.L. and Gehrels, G.E. Journal of
Structural Geology, v. 20, p. 883-904
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1999
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Batholith emplacement
at mid-crustal levels and its exhumation within an obliquely convergent
margin. Crawford, M.L., Klepeis, K.A., Gehrels ,
G.E. and Isachsen , C., Tectonophysics,
v. 312, p. 57-78.
High-temperature
arc-parallel normal faulting and transtension at the roots of an obliquely
convergent orogen. Keith A. Klepeis and Maria
Luisa Crawford, 1999, Geology, v. 27, p. 7-10
Early
Miocene or younger normal faults and other Tertiary structures in west Nass River map area, northwest British
Columbia, and adjacent parts of Alaska. Evenchick,
D.A., Crawford, M.L., McNicoll, V.J., Currie,
L.D. and O’Sullivan, P.B. Current Research 1999-A; Geological Survey of Canada,
p. 1-11.
Precambrian
and Lower Paleozoic -- Selected metamorphic and igneous rocks of the
Piedmont Upland, Crawford, M.L., Crawford, W.A., Hoersch,
A.L. and Wagner, M.E., in: Shultz, C., ed. The Geology of Pennsylvania.
Geological Survey of Pennsylvania and Pittsburgh Geological Society, Geological Survey of Pennsylvania Special
Publication 1, Chapter 3a, p. 26-35.
Piedmont
Upland, Crawford, M.L., Crawford, W.A., Hoersch, A.L. and Wagner,
M.E., in: Shultz, C.,
ed. The Geology of Pennsylvania.
Geological Survey of Pennsylvania and Pittsburgh Geological Society, Geological Survey of Pennsylvania Special
Publication 1, Chapter 16, p. 234-241.
Precambrian,
Crawford, M.L., Crawford, W.A., Hoersch, A.L. and
Wagner, M.E., in: Shultz, C., ed. The
Geology of Pennsylvania.
Geological Survey of Pennsylvania and Pittsburgh Geological Society, Geological Survey of Pennsylvania Special
Publication 1, Chapter 32, p. 414-417.
Distribution
of overprinting metamorphic mineral assemblages in the Wissahickon group,
southeastern Pennsylvania.
Bosbyshell, H, Crawford, M.L. and Srogi, L. In Valentino, D.W. and Gates, A.E.,
eds., The Mid-Atlantic Piedmont: Tectonic Missing Link of the Appalachians. Geological Society of America Special Paper 330, p.
41-57.
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2000
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Terrane
assembly and structural relationships in the eastern Prince Rupert
Quadrangle, British Columbia. Crawford, M.L., Crawford, W.A.and Gehrels, G.E., In:
Stowell, H.H. and McClelland, W.C. eds.,
Tectonics of the Coast Mountains, Southeastern Alaska and British Columbia. Geological Society of America
Special Paper 343, p. 1-21.
Metamorphic
history of the Coast Mountains orogen, western British Columbia and
southeastern Alaska., Stowell, H.H. and Crawford,
M.L., In: Stowell, H.H. and McClelland,
W.C. eds., Tectonics of the Coast Mountains, Southeastern Alaska and
British Columbia. Geological Society of America Special Paper 343, p.
257-283.
Post-accretion
magmatism within the Kuiu-Etolin
igneous belt, southeastern Alaska, Lindline,
J., Crawford, W.A., Crawford, M.L. and Omar, G.I., Canadian Mineralogist,
v. 38, p. 951-974.
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2001
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Paleomagnetism of the Quottoon
plutonic complex in the Coast Mountains of British Columbia and
southeastern Alaska: Evidence for tilting during uplift. Butler, R.F., Gehrels, G.E., Crawford, M.L. and Crawford, W.A.,
Canadian Journal of Earth Sciences, v. 38, p. 1367-1384
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2004
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A bimodal volcanic–plutonic system: the Zarembo Island extrusive suite and the Burnett Inlet
intrusive complex. Lindline, Jennifer,
Crawford, W.A. and Crawford, M.L., Canadian
Journal of Earth Sciences, v. 41, p. 355-375.
Neogene tilting of
crustal panels near Wrangell, Alaska. Butzer,
C., Butler,
R.F., Gehrels, G.E., Davidson, S., O’Connell, K.,
Crawford, M.L. Geology, v. 32,
1061-1064.
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2005
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Using incongruent,
equilibrium hydration reactions to model latter-stage crystallization in
plutons: examples from the Bell Island tonalite, Alaska. Beard, J.S.,
Ragland, P.C., and Crawford, M.L. Journal of Geology, v. 113,
589-599.
Reactive bulk assimilation: A model
for crust-mantle mixing in silicic magmas.
Beard, J.S., Ragland, P.C., and Crawford, M.L. Geology: v. 33, 681–684.
105 million years of igneous activity, Wrangell, Alaska,
to Prince Rupert, British Columbia. Crawford, M.L., Crawford, W.A. and Lindline, J. Canadian Journal of Earth
Sciences, v. 42, p. 1097-1116.
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2009
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Mid-Cretaceous–Recent crustal evolution in the central
Coast orogen, British Columbia and southeastern Alaska. Crawford, M.L., Klepeis, K.A., Gehrels, G.E., and Lindline, J. Geological Society of America Special
Paper 456, p. 97-124.
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Recent Abstracts:
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1998
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Arc
construction during high-temperature transpression and orogen parallel
extension. M.L. Crawford, Dept. of Geology, Bryn Mawr College, Bryn Mawr,
PA 19010 and K.A. Klepeis, Dept. of Geology and
Geophysics, University of Sydney, Sydney, NSW 2006, Australia.
High
temperature orogen parallel extension during arc construction and
exhumation. M.L. Crawford, Dept.
of Geology, Bryn Mawr College, Bryn Mawr, PA 19010 and K.A. Klepeis, Dept. of Geology and Geophysics, University of
Sydney, Sydney, NSW 2006, Australia
Early
Miocene or Younger Normal Faults and the ACCRETE Seismic Survey, Northwest
Canadian Cordillera. Evenchick, C A,
Geological Survey of Canada, 101-605 Robson Street Vancouver, BC V6B 5J3
Canada; Crawford, M, Bryn Mawr College Bryn Mawr, PA 19010 United States; McNicoll, V J, Geological Survey of Canada 601 Booth
Street Ottawa, ON K1A 0E8 Canada.
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1999
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Chronology
in the central Appalachian Piedmont – A tie to the Paleozoic clastic
sedimentary record. Crawford, M.L., Bosbyshell,
H. and Sinha, A.K., Geol. Soc. Am. Abs. with
Programs 31, #1, p. A-11.
Electron
microprobe age
mapping and dating of monazite: New insights on the timing of
polyphase Paleozoic metamorphism in the central
Appalachians. Bosbyshell, H., Williams, M.L.,
Jercinovic, M.J. and Crawford, M.L. Geol. Soc.
Am. Abs. with Programs 31, #7, p. A-39.
Petrogenesis
of mafic magmatic enclaves in tertiary granitoids,
SE Alaska: Crystal
fractionation and equilibration processes. Lindline,
J., Crawford, W.A. and Crawford, M.L., Geol. Soc. Am. Abs. with Programs
31, p. A-30.
Migmatization in the central
gneiss complex, coastal northwestern British Columbia and southeastern
Alaska, Sokol, N.K. and Crawford, M.L., in
Cook, F. and Erdmer, P. eds. 1999 Slave-Northern
Cordilleran Lithospheric Evolution (SNORCLE) Transect and Cordilleran
Tectonics Workshop Meeting, Lithoprobe Report No.
69, p. 169-170
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2000
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Magmatic
record of the Eocene shift from convergence to translation in the central Coast Mountains, BC
and SE AK. Lindline,
J, Mora-Klepeis, G., Crawford, M.L. and Crawford,
W.A., Geological Society of America Abstracts with Programs v. 32, #6, p.
A-24.
Geochemistry,
petrogenesis, and tectonic significance of amphibolites in the Wilmington
Complex and Wissahickon Formation, Central Appalachian Piedmont, Delaware
Co., PA. Bosbyshell, H., Srogi,
L.A., and Crawford, M.L. Geol. Soc. Am. Abs. with Programs 32, #1, p. A-6.
Geochemistry
and tectonic implications of early Paleozoic boninitic
and arc-related magmatism in the Wissahickon
Formation and Wilmington Complex, Central Appalachian Piedmont. Bosbyshell, H., Srogi, L.A.,
and Crawford, M.L., Geol. Soc. Am. Abs. with Programs 32, #7, p. A-216.
A bimodal
volcanic-plutonic system: the Zarembo Island
extrusive suite and the Deer-Etolin Island
intrusive complex. Lindline, J., Crawford,
W.A. and Crawford, M.L., Geol. Soc. Am. Abs. with Programs 32, #7, p.
A-147.
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2001
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Electron
microprobe age mapping and dating of monazite: deconvoluting
polyphase Paleozoic tectonism
in the Central Appalachians. Bosbyshell, H., Crawford, M.L. and Williams, M.L., Geol. Soc. Am. Abs. with Programs 33, #1,
p. A-82.
Tectonic
synthesis of recent geochronological and
geochemical data in the central Appalachian Piedmont of SE PA and N Del. Bosbyshell, H., Srogi, L., Aleinikoff, J.,
Plank, M.O., Schenck, W.S., Crawford, M.L. and
Williams, M.L., Geol. Soc. Am. Abs. with Programs 33, #7, p.
Crawford, M.L. Integrating CARIS GIS into a
geological field research program – CARIS users
group conference - INVITED PAPER.
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2002
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Syntectonic tonalite magma emplacement
during crustal thickening – the Bell Island Pluton, SE
Alaska. Crawford, M.L., Lindline,
J., Crawford, W.A., and Sinha, A.K. Geol. Soc.
Am. Abs. with Programs 34, #7, p. 44.
Mineral zoning in the Bell Island
pluton, SE Alaska, with implications for
the behavior of REE in igneous rocks. Beard, J., Sinha,
A.K., and Crawford, M.L. Geol. Soc. Am. Abs. with Programs 34, #7, p. 269.
Textural and Compositional Distinctions
between Mid-Cretaceous tonalites of the
Southeastern Petersburg Quadrangle, Alaska.
Krembs, F. J., Lindline,
J., Bosbyshell, H., and Crawford, M. L., Geol.
Soc. Am. Abs. with Programs 34, #1, p.
Petrogenesis of tonalites
based on 3-D architecture of Bell Island pluton, SE Alaska.
Sinha, A.K., Crawford, M.L., and Beard, J. Geol.
Soc. Am. Abs. with Programs 34, #7, p. 44.
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2004
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Hydrous
Arc Magmatism Associated with Accretion, the Central Coast Mountains Orogen
of Southeastern Alaska and Northern Coastal British Columbia, Crawford, M.L., Crawford, W.A., and
Beard, J.S. Geol. Soc. Am. Abs. with Programs
36, #5, p. 343.
Bulk
Assimilation, Reactive Crystallization and the Cryptic Nature of
Crust-Mantle Mixing in Plutons: A Conceptual Model, Beard, J.S., Ragland, P.C., and Crawford, M. L., Geol.
Soc. Am. Abs. with Programs
36, #5, 343.
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2005
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Crustal
Evolution during the last 105 Million years, Central Coast Orogen, BC and
Southeastern Alaska. Crawford,
M.L. Geol. Soc. Am. Abs. with Programs
37, #4, p. 51.
Mid-crustal
transtension and its relationship to arc magmatism
and rheological heterogeneity in an ancient orogen. Klepeis,
K.A., Crawford, M.L. and Gehrels, G.E. Geol. Soc.
Am. Abs. with Programs 37,
#7, p. 422.
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