detrital monazite turkey

Detrital zircon and monazite track the source of Mesozoic ...

01-04-2020· Detrital zircon and monazite dating of clastic rocks in the Mesozoic Kutch Basin at the western continental margin of India reveals predominant sediment derivation from rocks of Neoproterozoic Pan-African orogeny, followed by those of Cambro-Ordovician Bhimphedian (or Kurgiakh) orogeny and 850–1000 Ma rocks, with subordinate input from rocks of 700–800 Ma, 1500–1600 Ma, …

Reactions destroying detrital monazite in greenschist ...

Detrital monazite in sandstone and conglomerate from the Witwatersrand Supergroup, South Africa, displays reaction textures indicating that monazite has undergone replacement after sediment deposition, and most probably during regional greenschist-facies metamorphism.

Crystal Structure Refinements of Four Monazite Samples ...

18-11-2020· Two detrital (1 and 3) and two pegmatitic (2 and 4) monazite samples were used in this study (Table 1). The detrital monazite,rich heavy mineral fractions were separated from two raw beach placer sand samples collected from Cox s Bazar, Bangladesh. Zircon samples from this locality were previously characterized [16,17].

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

interpreted as detrital zircon grains. The age of deposition of the metapsammite sample is constrained between 1898 ± 6 Ma (based on multiple analyses of the youngest zircon) and 1890 4 Ma (the age metamorphic monazite, Berman et al., 2007). Figure 1: Regional geology around the northern (Chesterfield Inlet) segment of the

Detrital monazite geochronology, Upper Jurassic-Lower ...

Request PDF | Detrital monazite geochronology, Upper Jurassic-Lower Cretaceous of the Scotian Basin: Significance for tracking first-cycle sources | Monazite geochronology was applied to an east ...

detrital monazite turkey - primeragildenburgh.nl

Detrital rutile U The 06 Ga detrital monazite ages (Fig 5b) either match or are slightly older than the detrital rutile ages obtained by us from the Cambrian of Israel and Jordan, and which are found also in the Ordovician of Ethiopia and Jordan (see below)...

(PDF) Detrital monazite in the tim Mersoi Basin, niger ...

Detrital monazite in the tim Mersoi Basin, niger: Provenance and contribution to the uranium budget in siliciclastic sediments June 2011 The Canadian Mineralogist 49(2):487-501

IN SITU U-Th-Pb GEOCHRONOLOGY OF DETRITAL SHOCKED MONAZITE …

strate that detrital shocked monazite from the ca. 1.6 Ma Rietputs Fm. fluvial terrace found 500 km down-stream originated from the Vredefort Dome impact basin. Detrital monazite is a ubiquitous heavy mineral in siliciclastic sediments, and along with detrital shocked zircon and quartz, can be used to reconstruct ancient or eroded impact events.

DETRITAL MONAZITE IN THE TIM MERSOI BASIN, NIGER ...

A detailed study using back-scattered electron imaging and electron-microprobe analysis shows that grains of detrital monazite are present in the Carboniferous, Permian, Triassic

Monazite begets monazite: evidence for dissolution of ...

26-05-2007· Previous geochronology has shown that the monazite cores are older than 1.9 Ga and overlap with the ages of detrital zircon grains (∼3.5–2.0 Ga), consistent with a detrital origin. Many cores have scalloped and embayed surfaces indicating partial dissolution of former detrital grains.

(PDF) Composition and Age of Detrital Monazite from ...

Detrital monazite from Upper Jurassic sediments in the central part of the Frolov megadepression, West Siberian megabasin, is studied. Chemical composition of the mineral is studied and data on ...

INSIGHTS FROM COMBINED DETRITAL MONAZITE …

INSIGHTS FROM COMBINED DETRITAL MONAZITE GEOCHRONOLOGY AND ...

Geochemical Discrimination of Monazite Source Rock Based ...

Detrital zircon has been used extensively for detrital mineral studies because it can be U–Pb dated to a high precision and is resistant to physical and chemical weathering [4,7]. More recently, detrital monazite has been used to study orogenic events [8–11]. Monazite is a light rare earth element (REE) phosphate that can be used as a U ...

Metamorphism and exhumation of the NW Himalaya constrained ...

detrital monazite ages presented below to place additional constraints on the metamorphic evolution. The foreland basin The foreland basin occupies much of the Indus, Ganges and Brahmaputra river basins that are still the sites of sediment accumulation. Older units are exposed by thrusting of the Sub-Himalaya above the Main Frontal Thrust (Fig ...

Sparrho | U–Pb chronology and geochemistry of detrital ...

26-07-2016· In the Nile, however, the detrital monazite and zircon age peaks are contemporaneous. The geochemical analyses revealed significant variations in Eu/Eu∗, Gd/Lu and Th/U ratios among the detrital monazites, which can be attributed to elemental partitioning with the co-existing feldspars, garnet, and zircon/rutile, respectively.

A direct comparison of the ages of detrital monazite ...

15-10-2011· The detrital monazite age spectrum (n = 115) from the Raccoon Mountain Formation, which has the oldest age of the analyzed sandstones, is dominated by Paleozoic ages . Devonian dates are the primary signal, followed in abundance by Ordovician and Silurian. Eight detrital monazite crystals have Neoproterozoic dates.

DETRITAL MONAZITE IN THE TIM MERSOI BASIN, NIGER ...

A detailed study using back-scattered electron imaging and electron-microprobe analysis shows that grains of detrital monazite are present in the Carboniferous, Permian, Triassic and Jurassic sediments of the Tim Mersoi basin, Niger. Despite variations in the size and shape of monazite grains, the U–Th–Pb chemical ages obtained by electron microprobe fall in a narrow range, 425 to 650 Ma.

Monazite geochronology - Wikipedia

Monazite is a rare-earth-element phosphate mineral, with the chemical formula e.g. (Ce, La, Nd, Th, Y)PO 4.It appears in a small amount as an accessory mineral in many igneous, metamorphic and sedimentary rocks. Monazite minerals contain significant amounts of radioactive elements Th and U, which trigger radioactive processes.These two elements are what make this mineral suitable for ...

Insights into Polyphase Phanerozoic Tectonic Events in SE ...

On the other hand, zircon and monazite are common detrital minerals in sedimentary rocks and sediments from modern rivers or beach placers (e.g., [22, 23]).Hf isotopes of detrital zircon and Nd isotopes of detrital monazite provide a good estimate for the average Hf and Nd isotopic composition of large continental areas that supplied the sediments [23, 24].

Monazite | Keita ITANO / Mysite

Detrital Monazite ~20–30 µm. Monazite is a light rare earth element phosphate and is a secondary mineral that is rich in Th and U. Its production is diverse. Igneous rocks are mainly contained in granites with low Ca content such as S-type.

Occurrence and behaviour of monazite-(Ce) and xenotime-(Y ...

Occurrence and behaviour of monazite-(Ce) and xenotime-(Y) in detrital and saprolitic environments related to the Serra Dourada granite, Goi as/Tocantins State, Brazil: potential for REE deposits Igor V. Santana, Frances Wall, Nilson F. Botelho July 28, 2015 Abstract

Reactions destroying detrital monazite in greenschist ...

30-06-2009· Monazite was identified in ~ 40% of the samples examined from the Witwatersrand Supergroup.In some localities, monazite only occurs as euhedral to subhedral inclusions preserved within detrital quartz grains (Fig. 2A, B).In these samples, detrital monazite grains, if formerly present in the matrix, have been completely destroyed.

Response of detrital zircon and monazite, and their U–Pb ...

08-11-2010· Detrital monazite U–Pb ages survived through mid‐amphibolite facies, but not to higher grade. Monazite in the migmatite and granodiorite records only metamorphism and granite genesis at 432.8 ± 3.5 Ma. Detrital zircon was unaffected by metamorphism until the inception of partial melting, ...

RARE EARTH AND RELATED ELEMENTS IN THE GOODRICH …

of the detrital monazite is a good fingerprint for determining the source area of the monazite. If the chemical composition of monazite in a local granite, or other rock type, matches that of the detrital monazite in the Goodrich, then a likely source area is indicated. INTRODUCTION The Palmer area is located approximately 20 miles