H. Helmstaedt

发表

Tectonic Relationships Between E-Type Cratonic and Ultra-High-Pressure (UHP) Diamond: Implications for Craton Formation and Stabilization

H. Helmstaedt, 2013 .

Trace element fractionation in deep subduction zones inferred from a lawsonite-eclogite xenolith from the Colorado Plateau

K. Kobayashi, E. Nakamura, T. Usui, 2007 .

Petrology and Geochemistry of Eclogite Xenoliths from the Colorado Plateau: Implications for the Evolution of Subducted Oceanic Crust

E. Nakamura, T. Usui, H. Helmstaedt, 2004 .

Fate of the subducted Farallon plate inferred from eclogite xenoliths in the Colorado Plateau

K. Kobayashi, E. Nakamura, T. Usui, 2003 .

Early to Mid‐Tertiary inverted metamorphic gradient under the Colorado Plateau: Evidence from eclogite xenoliths in ultramafic microbreccias, Navajo Volcanic Field

D. J. Schulze, H. Helmstaedt, D. Schulze, 1991 .

Petrofabric studies of eclogite, spinel‐Websterite, and spinel‐lherzolite Xenoliths from kimberlite‐bearing breccia pipes in southeastern Utah and northeastern Arizona

O. Anderson, H. Helmstaedt, A. T. Gavasci, 1972 .

Structural analysis of the Miniss River and related faults, western Superior Province: post-collisional displacement initiated at terrane boundaries

V. Mcnicoll, K. Bethune, H. Helmstaedt, 2006 .

Diamonds through Time

S. H. Richardson, S. Shirey, J. Gurney, 2010 .

Elastic properties of eclogite xenoliths from diatremes of the East Colorado Plateau and their implication to the upper mantle structure

M. Kumazawa, K. Masaki, H. Helmstaedt, 1971 .

Origin of Archean subcontinental lithospheric mantle: Some petrological constraints

N. Coltice, N. Arndt, M. Grégoire, 2009 .

Regional cross section of the Southern Province adjacent to Lake Huron, Ontario: implications for the tectonic significance of the Murray Fault Zone

R. A. Price, H. Helmstaedt, A. Zolnai, 1984 .

Images of a lower-crustal oceanic slab: Direct evidence for tectonic accretion in the Archean western Superior province

P. Thurston, R. Harrap, D. White, 2003 .

Purtuniq ophiolite, Cape Smith belt, northern Quebec, Canada: A reconstructed section of Early Proterozoic oceanic crust

M. Bickle, D. J. Scott, H. Helmstaedt, 1992 .

Paleoproterozoic submarine intrabasinal rifting, Baffin Island, Nunavut, Canada: volcanic structure and geochemistry of the Bravo Lake Formation

T. K. Kyser, H. Helmstaedt, S. M. Johns, 2006 .

Chapter 2 The Proterozoic Ophiolite Problem

D. J. Scott, H. Helmstaedt, 1992 .

Geology and Chemistry of the Early Proterozoic Purtuniq Ophiolite, Cape Smith Belt, Northern Quebec, Canada

S. Lucas, M. St-Onge, D. J. Scott, 1991 .

Tectonic evolution of the western Superior Province from NATMAP and Lithoprobe studies

M. Sanborn-Barrie, T. Skulski, D. White, 2006 .

A review of the use and application of mantle mineral geochemistry in diamond exploration

R. O. Moore, J. Gurney, H. Helmstaedt, 1993 .

Pickle Lake revisited: New structural, geochronological and geochemical constraints on greenstone belt assembly, western Superior Province, Canada

T. Skulski, V. Mcnicoll, M. Young, 2006 .

Crust–mantle coupling revisited: The Archean Slave craton, NWT, Canada

H. Helmstaedt, 2009 .

Geotectonic controls of primary diamond deposits" implications for area selection

J. Gurney, H. Helmstaedt, 1995 .

AGES OF CRATONIC DIAMOND AND LITHOSPHERE EVOLUTION: CONSTRAINTS ON PRECAMBRIAN TECTONICS AND DIAMOND EXPLORATION

S. H. Richardson, J. Gurney, H. Helmstaedt, 2010 .

The life cycle of diamondiferous cratons – a leitmotif with infinite regional variations

H. Helmstaedt, 2017 .

Major element distribution in Archean banded iron formation (BIF): influence of metamorphic differentiation

M. Takano, S. Kawakami, N. Katsuta, 2012 .

Eclogite nodules from kimberlite pipes of the Colorado plateau—samples of subducted Franciscan-type oceanic lithosphere

R. Doig, H. Helmstaedt, 1973 .

Tectonic Aspects of the Kimberlite - Diamond - Upper-Mantle-Sample Connection: Does a coherent Model evolve?

H. Helmstaedt, 2018 .

Coesite-Sanidine Eclogites from Kimberlite: Products of Mantle Fractionation or Subduction?

H. Helmstaedt, D. Schulze, 1988, The Journal of Geology.

Structural patterns and tectonic evolution of supracrustal domains in the Archean Slave Province, Canada

W. K. Fyson, H. Helmstaedt, 1988 .

Metagabbronorite from DSDP hole 334: an example of high-temperature deformation and recrystallization near the Mid-Atlantic Ridge

John M. Allen, H. Helmstaedt, 1977 .

Zoned epidote nodules from sedimentary rocks of the Eastport Formation, southwest New Brunswick

J. Percival, H. Helmstaedt, 1978 .

Deformation and Intrusion in Deeply Buried Rocks: Creep, High-Angle Ductile and Brittle Shear, and Congruent Shear Arrays

J. Dixon, H. Helmstaedt, B. C. Wilson, 1992 .

Character of fluids associated with hydrothermal alteration and metamorphism of Palaeoproterozoic submarine volcanic rocks, Baffin Island, Nunavut, Canada

T. K. Kyser, H. Helmstaedt, S. M. Johns, 2006 .

Zoned sodic amphibole: Petrologic indicator of changing pressure and temperature during tectonism in the Bathurst Area, New Brunswick, Canada

D. M. Carmichael, H. Helmstaedt, W. Trzcienski, 1984 .

Mantle-derived guyanaite in a Cr-omphacitite xenolith from Moses Rock diatreme, Utah

R. Flemming, H. Helmstaedt, D. Schulze, 2014 .

SURVIVAL OF THE BROWN COLOR IN DIAMOND DURING STORAGE IN THE SUBCONTINENTAL LITHOSPHERIC MANTLE

R. Flemming, H. Helmstaedt, Evan M. Smith, 2010 .

Diamonds Crustal Distribution and Formation Processes in Time and Space and an Integrated Deposit Model

S. H. Richardson, T. Nowicki, K. Westerlund, 2005 .

Eclogite from central Yukon: a record of subduction at the western margin of ancient North America

P. Erdmer, H. Helmstaedt, 1983 .

Garnet Clinopyroxenite - Chlorite Eclogite Transition in a Xenolite from Moses Rock: Further Evidence for Metamorphosed Ophiolites Under the Colorado Plateau

H. Helmstaedt, D. Schulze, 2013 .

A pre-2686 Ma intrusion-related gold deposit at the Kiena Mine, Val d'Or, Quebec, southern Abitibi Province; reply

H. Wasteneys, M. Cormier, H. Helmstaedt, 1996 .

The Ile Bizard intrusion, Montreal, Quebec—kimberlite or lamprophyre?

R. Raeside, H. Helmstaedt, 1982 .

Pyroxene-ilmenite intergrowths in garnet pyroxenite xenoliths from a New York kimberlite and Arizona latites

R. Cassie, H. Helmstaedt, D. Schulze, 1978 .

Insights on Archean continent—ocean assembly, western Superior Province, from new structural, geochemical and geochronological observations: introduction and summary

J. Percival, H. Helmstaedt, 2004 .

Formation of the Archean Kaapvaal Province revisited : Implications for the birth and growth of its diamondiferous root

J. Gurney, H. Helmstaedt, 2001 .

Stylolitic cleavage and cleavage refraction in Lower Paleozoic carbonate rocks of the Great Valley, Maryland

H. Helmstaedt, R. Greggs, 1980 .

Origin of framesite revisited: Possible implications for the formation of CLIPPIR diamonds

H. Helmstaedt, Andy E. Moore, 2023, Earth-Science Reviews.

Structural history of pre-Carboniferous rocks in parts of eastern Cape Breton Island

H. Helmstaedt, S. Tella, 1972 .

Ordovician Stratigraphy and the Structural Style At the Main RangesFront Ranges Boundary near Smith Peak, British Columbia

H. Helmstaedt, J. M. Dixon, J. Mott, 1986 .

A Petrogenetic Grid For Calcium and Alkali-deficient Bulk Compositions

D. M. Carmichael, J. Percival, H. Helmstaedt, 1982 .

Multiple dikes in Lower Kam Group, Yellowknife greenstone belt: Evidence for Archean sea-floor spreading?

J. Brophy, H. Helmstaedt, W. Padgham, 1986 .

An Occurrence of Archean Pseudotachylite from Southeastern Manitoba

H. Helmstaedt, I. Ermanovics, A. Plant, 1972 .

Superposed crenulation cleavages resulting from progressive deformation

H. Helmstaedt, J. M. Dixon, 1980 .

Thin-skinned imbrication and subsequent thick- skinned folding of rift-fill, transitional-crust, and ophiolite suites in the 1.9 Ga Cape Smith Belt, northern Quebec

D. M. Carmichael, S. Lucas, M. St-Onge, 1988 .

Deformational history of an Archean fold belt, eastern Point Lake area, Slave Structural Province, N.W.T.

J. King, H. Helmstaedt, 1989 .

Deformation history in part of the Lubec–Belleisle zone of southern New Brunswick

R. L. Brown, H. Helmstaedt, 1970 .

Timing of the Cenozoic "Great Hydration" event beneath the Colorado Plateau: Th-Pb dating of monazite in Navajo volcanic field metamorphic eclogite xenoliths

D. Davis, H. Helmstaedt, B. Joy, 2015 .

Pre-Carboniferous Structural History of S.E. Cape Breton Island, Nova Scotia

H. Helmstaedt, S. Tella, 1973 .

Structural evolution of the Michipicoten (Wawa) greenstone belt, Superior Province; evidence for an Archean fold and thrust belt

H. Helmstaedt, Z. Arias, 1990 .

Evidence for two blue (type IIb) diamond populations

A. Moore, H. Helmstaedt, 2019, Nature.

THE 2.00 GA PURTUNIQ OPHIOLITE, CAPE SMITH BELT, CANADA: MORB-LIKE CRUST INTRUDED BY OIB-LIKE MAGMATISM

S. Lucas, M. St-Onge, D. J. Scott, 1999 .

A pyroxene‐rich garnet‐peridotite inclusion in an ultramafic breccia dike at Moses Rock, southeastern Utah

H. Helmstaedt, A. T. Gavasci, 1969 .

Garnet Pyroxenite and Eclogite Xenolites from the Sullivan Buttes Latite, Chino Valley, Arizona

H. Helmstaedt, D. Schulze, 2013 .

Fractal Nature of the Band-Thickness in the Archean Banded Iron Formation in the Yellowknife Greenstone Belt, Northwest Territories, Canada

M. Kumazawa, S. Kawakami, M. Takano, 2013 .

GEOTECTONIC CONTROLS OF DIAMONDS AND KIMBERLITES AND THEIR APPUCATION TO DIAMOND EXPLORATION.

H. Helmstaedt, 2018 .

Note on Plant Fossils from Beaver Harbour, N. B.

H. Helmstaedt, 1967 .

Upper Devonian Plant Fossils from Beaver Harbour, N.B.

H. Helmstaedt, 1966 .

The Western Superior Province Lithoprobe and NATMAP transects: introduction and summary

J. Percival, H. Helmstaedt, 2006 .