Search Results - "Haggerty, Stephen E."

Carbonado: Physical and chemical properties, a critical evaluation of proposed origins, and a revised genetic model by Haggerty, Stephen E.

“…Carbonado-diamond is the most controversial of all diamond types and is found only in Brazil, and the Central African Republic (Bangui). Neither an affinity to…”
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A Diamond Trilogy: Superplumes, Supercontinents, and Supernovae by Haggerty, Stephen E.

“…Diamond is a remarkable mineral and has been long recognized for its unusual physical and chemical properties: robust and widespread in industry, yet regally…”
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Perovskite-bearing crystal-controlled oxide-silicate mantle xenoliths: Resolution to controversial origins? by Haggerty, Stephen E.

“…Classic lamellar clinopyroxene-ilmenite intergrowths (type 1) are extended to include discovery of olivine-ilmenite-perovskite-wüstite (type 2) and…”
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Geochemistry of xenolithic eclogites from West Africa, part 2: origins of the high MgO eclogites by Barth, Matthias G, Rudnick, Roberta L, Horn, Ingo, McDonough, William F, Spicuzza, Michael J, Valley, John W, Haggerty, Stephen E

“…Oxygen isotope, mineral trace element, and measured and reconstructed whole-rock compositions are reported for the high MgO eclogite xenolith suite (16 to 20…”
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Lithological and compositional diversity of diamond substrates beneath the Koidu kimberlite reveals addition of subducted sediments by Lai, Mei Yan, Stachel, Thomas, Hardman, Matthew F., Pearson, D. Graham, Harris, Jeff W., Stern, Richard A., Haggerty, Stephen E.

“…Six diamond-bearing eclogite xenoliths with oceanic crust protoliths and 370 mineral inclusions in 104 diamonds recovered from the Koidu kimberlite complex in…”
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Discovery of a kimberlite pipe and recognition of a diagnostic botanical indicator in NW Liberia by Haggerty, Stephen E

“…Diamond-bearing kimberlite dikes (fissures) are present in the deeply eroded Man Shield of West Africa. Small kimberlite pipes, generally less than 1 hectare…”
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Ultradeep (Greater Than 300 Kilometers), Ultramafic Upper Mantle Xenoliths by Haggerty, Stephen E., Sautter, Violaine

“…Geophysical discontinuities in Earth's upper mantle and experimental data predict the structural transformation of pyroxene to garnet and the solid-state…”
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Infrared absorption investigations confirm the extraterrestrial origin of Carbonado diamonds by GARAI, Jozsef, HAGGERTY, Stephen E, REKHI, Sandeep, CHANCE, Mark

“…The first complete infrared FTIR absorption spectra of carbonado diamond confirm the interstellar origin of this most enigmatic diamond. All previous attempts…”
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Geochemistry of xenolithic eclogites from West Africa, part I: A link between low MgO eclogites and archean crust formation by Barth, Matthias G., Rudnick, Roberta L., Horn, Ingo, McDonough, William F., Spicuzza, Michael J., Valley, John W., Haggerty, Stephen E.

“…—Oxygen isotope, mineral trace element, and measured and reconstructed whole rock compositions are reported for low MgO (6–13 wt.% MgO in the whole rock)…”
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Infrared Absorption Investigations Confirm the Extraterrestrial Origin of Carbonado Diamonds by Garai, Jozsef, Haggerty, Stephen E, Rekhi, Sandeep, Chance, Mark

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Ultradeep (>300 Kilometers) Ultramafic Xenoliths: Petrological Evidence from the Transition Zone by Sautter, Violaine, Haggerty, Stephen E., Field, Stephen

“…The seismologically delineated transition zone, at depths between 400 and 670 kilometers, is a fundamental discontinuity in the earth that separates the upper…”
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Geological setting and chemistry of kimberlite clan rocks in the Dharwar Craton, India by Haggerty, Stephen E., Birkett, Tyson

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Micro-diamonds: Proposed origins, crystal growth laws, and the underlying principle governing resource predictions by Haggerty, Stephen E.

“…The origin of micro-diamonds is controversial and although the application to determine the grade and value of macro-diamonds in kimberlite/lamproite bodies…”
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Kimberlite discoveries in NW Liberia: Tropical exploration & preliminary results by Haggerty, Stephen E.

“…This report is brief in context and rich in unexpected discovery. With >2km of erosion, kimberlite models predict the near-complete removal of pipes with…”
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Diamond genesis in a multiply-constrained model by Haggerty, Stephen E

“…Lateral and vertical heterogeneities and the geometry of the lithosphere can account for a variety of second-order variables such as diamond type, color,…”
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Eclogites and the Metasomatism of Eclogites from the Jagersfontein Kimberlite: Punctuated Transport and Implications for Alkali Magmatism by Pyle, Joseph M., Haggerty, Stephen E.

“…The first detailed petrographic and electron microbeam study of eclogite xenoliths and associated metasomatism from the Jagersfontein Kimberlite are presented…”
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Ultradeep xenoliths from African kimberlites: Sr and Nd isotopic compositions suggest complex history by Macdougall, J.D, Haggerty, Stephen E

“…Rare kimberlite xenoliths have chemical characteristics that indicate an origin deep in the upper mantle, in the vicinity of the transition zone. The Nd…”
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Zinc isotope evidence for carbonate alteration of oceanic crustal protoliths of cratonic eclogites by Wang, Ze-Zhou, Liu, Sheng-Ao, Rudnick, Roberta L., Teng, Fang-Zhen, Wang, Shui-Jiong, Haggerty, Stephen E.

“…•Zn isotopes in cratonic eclogites support their origin as carbonated oceanic crust.•Isotopic exchange of AOC protoliths with carbonates results in high-δ66Zn…”
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A Biogeochemical study of Pandanus candelabrum in Liberia: A potential geobotanical indicator for kimberlite pipes in tropical terranes by Cooper, Stephen F., Haggerty, Stephen E., Bolarinwa, Anthony Temidayo, Shannon, Eugene H., Youssef, Roger H.

“…Pandanus is recently recognized as a new geobotanical indicator for kimberlite diatremes in Liberia. The plant also grows in non-kimberlite terranes making it…”
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"Majorite" and "silicate perovskite" mineral compositions in xenoliths from Malaita by Neal, C R, Haggerty, S E, Sautter, V

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