detrital zircon new

USING DETRITALZIRCON GEOCHRONOLOGY ...

The new detritalzircon data from the Heiberg Group suggest that the provenance change occurred below the King Christian Formation and above the Romulus Member, which is equivalent to the Skybattle Formation (Fig. ; ca. 210–190 Ma).

Detrital shocked zircon provides first radiometric age ...

Detrital shocked zircon provides first radiometric age constraint (<1472 Ma) for the Santa Fe impact structure, New Mexico, USA Pedro E. Montalvo 1Department of Geology, University of Puerto Rico, Box 9000, Mayagüez, Puerto Rico 006819000, USA

Detrital zircon doubledating of forearc basin strata ...

Detrital zircon doubledating of forearc basin strata reveals magmatic, exhumational, and thermal history of sediment source areas ... and thermal reset grains. We find that the erosion of both shallow and deep intrusive arc rocks dominate the detrital age signal, while syndepositional extrusive grains are lacking. ... New issue alert. Early ...

New detrital zircon UPb ages from BIFrelated ...

New detrital zircon UPb ages from BIFrelated metasediments in the Ntem Complex (Congo craton) of southern Cameroon, West Africa Nelson N. Chombong 1* …

Detrital zircon ages in Buller and Takaka terranes, New ...

Detrital zircon ages are presented for 34 early Palaeozoic sandstones from Buller and Takaka terranes, New Zealand, and formerly adjacent parts of Australia–Antarctica.

Detrital zircon geochronology of Cordilleran retroarc ...

Detrital zircon geochronology of Cordilleran retroarc foreland basin strata, western North America Andrew K. Laskowski,1 Peter G. DeCelles,1 and George E. Gehrels1 ... beginning with new samples from southwestern Montana. [5] Sixteen of the new samples were collected from fresh

New Insights into the Geology of the Namaqua Tectonic ...

New Insights into the Geology of the Namaqua Tectonic Province, South Africa, from Ion Probe Dating of Detrital and Metamorphic Zircon Johann G. Raith , 1 David H. Cornell , 2 Hartwig E. Frimmel , 3 and Coenraad H. De Beer 4

New Detrital Zircon Geochronology From the Cycladic ...

The Cycladic Massif is a Cadomian‐type terrane, while the Pelagonian displays an Avalonian‐type affinity. Despite its Avalonian affinity, the Pelagonian lacks Ordovician‐Devonian (450–400‐Ma) zircon ages. In contrast, detrital zircon grains of such ages are abundant in the Cycladic Massif.

New CAIDTIMS Detrital Zircon Constraints on Middle ...

NEW CAIDTIMS DETRITAL ZIRCON CONSTRAINTS ON MIDDLE NEOPROTEROZOIC SEDIMENTARY SUCCESSIONS, SOUTHWESTERN UNITED STATES by Abigail R. Bullard A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Geology Approved: _____ Carol M. Dehler, Major Professor

by detrital zircon, metamorphic monazite, and 40Ar Ar ...

by detrital zircon, metamorphic monazite, and 40Ar39Ar ... M., 2008, New Understanding of the Geology and Diamond Prospectivity of Southampton Island, Central ... Abstracts. Sapers, H. M., 2008, Constraints on the Proterozoic assembly of the western Churchill Province provided by a detrital zircon UPb SHRIMP geochronology study: Barbour Bay ...

New Detrital Zircon UPB Ages of the El Cepo Metamorphic ...

The preliminary data obtained in detrital zircons from the ECMC at the latitude of La Serena (30° S) show a prominent peak at ca. 460 Ma and at least two minor peaks at ca. 660 Ma and ca. 1020 Ma. Nevertheless, a detailed analysis in the main peak allow to note two intersect concordia ages at ± and ± Ma.

(PDF) New 40Ar39Ar and detrital zircon UPb ages for the ...

New 40Ar39Ar and detrital zircon UPb ages for the Upper Cretaceous Wahweap and Kaiparowits formations on the Kaiparowits Plateau, Utah: implications for regional correlation, provenance, and ...

Using detrital zircon ages and Hf isotopes to identify 1 ...

detrital zircon ages and Hf isotopes to identify – sedimentary basins and fingerprint sources of exotic – grains ... new Hf data from the Blackjack Formation and also reports the discovery of potentially correlative quartzite in the Defiance uplift

Detrital Zircon UPb Geochronology and Paleodrainage ...

Detrital Zircon UPb Geochronology and Paleodrainage Reconstruction of the BlackhawkCastlegate Succession, Book Cliffs and Wasatch Plateau, Utah, 51378 (2017).

Detrital zircon geochronology of pre‐Tertiary strata in ...

[1] Detrital zircon data have recently become available from many different portions of the Tibetan–Himalayan orogen. This study uses 13,441 new or existing U‐Pb ages of zircon crystals from strata in the Lesser Himalayan, Greater Himalayan, and Tethyan sequences in the Himalaya, the Lhasa, Qiangtang, and Nan Shan–Qilian Shan–Altun Shan ...

ORIGINS OF THE MORETOWN FORMATION, VERMONT: A …

ORIGINS OF THE MORETOWN FORMATION, VERMONT: A DETRITAL ZIRCON STUDY . by Juliet RyanDavis . Submitted in partial fulfillment of . the requirements for the degree of . Bachelor of Arts of Middlebury College . Department of Geology . Middlebury, Vermont . May 2013

Fundamentals of detrital zircon fissiontrack analysis for ...

Fundamental aspects of detrital zircon fi ssiontrack analysis in provenance and ex humation studies include etching of fission tracks in zircon, decomposition of grainage distributions, detection of major bedrock age components, and reproduc­ ibility of results. In this study. we present new detrital zircon fissiontrack data of

Category: Detrital Zircon Geological Society of Connecticut

Zircon is a durable mineral found in nearly all sedimentary rocks and can be dated by Laser Ablation Inductively Coupled Plasma Mass Spectrometer (LAICPMS) analysis of UPb in the detrital zircon grains. The age of a detrital zircon provides the date of the source rock in which it formed.

Paleowinds inferred from detritalzircon geochronology of ...

Paleowinds inferred from detritalzircon geochronology of upper Paleozoic loessite, western equatorial Pangea ... samples (from New Mexico and Utah) differ from one another; the New Mexico loessite contains a large mode at 1700 Ma, missing in the Utah sample, reflecting their locations on

DETRITAL ZIRCON AGES FOR THE CAMBRIAN MONKTON …

New York (NY) by previous workers suggest they would be at least partially correlative. Detrital zircon studies have been completed on the Potsdam Group by others to identify to help constrain the age and provenance of this stratigraphy. This study

ARTICLE NEW DETRITAL ZIRCON AGE DATA FROM THE …

new detrital zircon age data from the tetori group in the mana and itoshiro areas of fukui prefecture, central japan yuta kawagoe1, shinichi sano2, yuji orihashi3, hokuto obara1,

Detrital Zircon UPb Geochronology Applied to Tectonics ...

Detrital zircon geochronology has an exciting future given the growth history recorded in individual crystals; the variety of detrital minerals that can provide complementary information; and the large number of geochemical, isotopic, and chronologic systems that can be applied to these minerals.

[insu00433793, v1] Detritalzircon ages and geochemistry ...

Detrital zircon ages and geochemistry of sedimentary rocks in basement Mesozoic terranes and their cover rocks in New Caledonia, and provenances at the Eastern

Detrital shocked zircon provides first radiometric age ...

Nov 29, 2018· Detrital shocked zircon provides first radiometric age constraint (<1472 Ma) for the Santa Fe impact structure, New Mexico, USA Pedro E. Montalvo 1Department of Geology, University of Puerto Rico, Box 9000, Mayagüez, Puerto Rico 006819000, USA

New constraints from detrital zircon ages on prolonged ...

Detrital zircon ages constrain transition from Cadomian orogen to passive margin. • This transition spanned about 50 • Curved geometry of the West African …

Detritalzircon geochronology of the metasedimentary rocks ...

Detritalzircon geochronology of the metasedimentary rocks of northwestern Graham Land Volume 22 Issue 1 David L. Barbeau, Justin T. Davis, Kendra E. Murray, Victor Valencia, George E. Gehrels, Khandaker M. Zahid, David J. Gombosi ... the South Shetland Islands and eastern New Zealand indicate a diversity of sediment provenance not ...

New UPb geochronology evidence for Ga detrital zircon ...

Detrital zircon UPb ages from one sandstone and one claystone unit in the upper Huronian Supergroup, near Flack Lake, Ontario, Canada, provide new evidence for the maximum depositional age of the two youngest formations and reinterpretation of the depositional history of the upper Huronian Supergroup.

Detrital zircon U–Pb geochronology and Hf isotope ...

Detrital zircon U–Pb geochronology and Hf isotope geochemistry of metasedimentary strata in the southern Brooks Range: constraints on Neoproterozoic–Cretaceous evolution of Arctic Alaska ... to help elucidate terrane boundaries within the Arctic Alaska–Chukotka microplate and to add new constraints to the palaeogeographical evolution of ...

GEOLOGIC NOTE AUTHORS

younging trend in the youngest detrital zircon populations, which matches new radioisotopic ages on volcanic tuffs from a correlative outcrop section. This is followed by an interval with recycled young zircons, followed by a zirconfree interval, interpreted to correspond to changes in magma composition of

Geological Society of America Bulletin

Detritalzircon geochronology of the northeastern Tibetan plateau ... These analyses involve ablation of the zircon with a New Wave DUV193 Excimer laser (operating at a wavelength of 193 nm) using a spot diameter of 50 mm. The analysis lasts for 20 s, during which a

Detrital zircon geochronology and its provenance ...

The Lower Cretaceous sample shows a complicated provenance detrital zircon signature, with new peak ages of 290–330 Ma as well as 370(or 350)–450 Ma showing evident arc orogenic provenance tectonic attribute, probably reflecting a new provenance supply that resulted from denudation process whthin the South Tian Shan and South Tian Shan suture.

Detrital zircon geochronology of preTertiary strata in ...

[1] Detrital zircon data have recently become available from many different portions of the Tibetan–Himalayan orogen. This study uses 13,441 new or existing U‐Pb ages of zircon crystals from strata in the Lesser Himalayan, Greater Himalayan, and Tethyan sequences in the Himalaya, the Lhasa, Qiangtang, and Nan Shan–Qilian Shan–Altun Shan

Detrital zircon facies of Cordilleran terranes in western ...

Here, I compile published and new detrital zircon UPb ages from preDevonian–early Late Cretaceous, arcrelated basins in terranes of western North America. The compilation includes terranes with sufficient available data from west of the 87/86Sr i =