Application of Cathodoluminescence Imaging to the Study of Sedimentary Rocks

Boggs, Sam; Krinsley, David H.

doi:10.1017/cbo9780511535475

Cited by 167 publications

(148 citation statements)

References 126 publications

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“…8). The orange luminescence color confirms the presence of minimal Mn 2+ activator ions and indicates that the cement is predominantly magnesian calcite with minimal manganese and ferroan calcite or siderite minimal to absent (see Boggs and Krinsley 2006;Hiatt and Pufahl 2014). However, minor areas of yellow luminescence (~ 575-585 nm wavelength) can be seen around the margins of some grains, indicating calcite with a higher relative levels of Mn 2+ activator ions than Fe 2+ or Fe 3+ (see Hiatt and Pufahl 2014).…”

Section: Petrographic Analysismentioning

confidence: 92%

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Depositional Environment of the Lower Cretaceous (Upper Albian) Winton Formation At Isisford, Central-West Queensland, Australia, Inferred From Sandstone Concretions

Syme¹,

Welsh²,

Roberts³

et al. 2016

Journal of Sedimentary Research

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Numerous vertebrate and plant fossils have been found in ex-situ sandstone concretions near Isisford in central-west Queensland since the mid-1990s. These concretions are found in the Lower Cretaceous portion (upper Albian, 100.5-102.2 Ma) of the Winton Formation. The lower most Winton Formation is thought to have formed in a fluvial channel or flood-basin setting proximal to the Eromanga Sea, but due to the scarcity of good exposures, the local depositional environment at Isisford has not been ascertained. Minimal compression of vertebrate and plant fossils, a lack of grain suturing, predominantly cement-supported fabric, and fractures running through calcite cement, as well as fossil bone and framework grains, indicates that concretions formed during early diagenesis (pre-compactional or syndepositional). Calcite stable-isotope δ 18 O VPDB values range from -12.25 to -4‰, indicating mixed marine and meteoric pore waters, and δ 13 C VPDB values range from -5.3 to 4.1‰, indicative of both sulfate reduction and methanogenesis of organic material (including decaying vertebrate soft tissues) in the burial environment. The mixed marine and freshwater signature suggests a marginal marine setting, possibly deltaic or estuarine, connected to the regressive epicontinental Eromanga Seaway at around 102-100 Ma. This is not inconsistent with the lithology from nearby cores, coupled with Isisford fossil-vertebrate ecology (personal observation). Our research demonstrates the utility of investigating ex-situ concretions to refine paleoenvironments at localities where little or no outcrop is available and traditional facies analysis is impractical. INTRODUCTIONSandstone concretions cemented with calcium carbonate have been reported worldwide, ranging from the centimeter scale (Dix and Mullins 1987;Allison and Pye 1994;Mozley and Davis 2005; Tabor et al. 2007), the decimeter to meter scale (Dix and

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Section: Petrographic Analysismentioning

confidence: 92%

“…Examination of thin sections under cathodoluminescence (CL) reveals that the electromagnetic spectrum of the calcite cement is orange (~ 585-650 nm wavelength; sensu Boggs and Krinsley 2006), with no obvious concentric or sectoral zonation (Fig. 8).…”

Section: Petrographic Analysismentioning

confidence: 99%

Depositional Environment of the Lower Cretaceous (Upper Albian) Winton Formation At Isisford, Central-West Queensland, Australia, Inferred From Sandstone Concretions

Syme¹,

Welsh²,

Roberts³

et al. 2016

Journal of Sedimentary Research

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“…8 B, B'). Both dark red and orange generations are represented by calcite assigned by Boggs & Krinsley (2006) to eogenesis. Yellow cement (Fig.…”

Section: Mft-4: Grainstones and Rudstones (Biosparitic/biospar Ruditic)mentioning

confidence: 99%

“…Yellow cement (Fig. 8 B, B') is the brightest and the youngest generation of carbonate, which crystallized at the stage of telogenesis (Boggs & Krinsley 2006) in pores that remained after precipitation of the two older cement generations. Carbonates are affected by selective dolomitization (facies selective dolomitization, cf.…”

Section: Mft-4: Grainstones and Rudstones (Biosparitic/biospar Ruditic)mentioning

confidence: 99%

An Albian demise of the carbonate platform in the Manín Unit (Western Carpathians, Slovakia)

Fekete¹,

Soták²,

Boorová³

et al. 2017

Geologica Carpathica

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Abstract:The production of platform carbonates of the Manín Unit (Manín Straits, Central Western Carpathians) belonging to the Podhorie and Manín formations and formed by remains of rudists and benthic foraminifers (Urgonian-type carbonates), was previously assumed to terminate during the Aptian. First, we show that these deposits were primarily formed on the upper slope (Podhorie Formation) and in a fore-reef environment (Manín Formation). Second, biostratigraphic data indicate that the shallow-water production persisted up to the Albian, just as it did in another succession of the Manín Unit. The Podhorie Fm contains colomiellids (Colomiella recta, C. mexicana) and calcareous dinoflagellates (Calcisphaerula innominata) that indicate the Albian age. It also contains planktonic foraminifers (Ticinella roberti, Ticinella cf. primula, Ticinella cf. madecassiana, Ticinella cf. praeticinensis) of the Albian Ticinella primula Zone. The Podhorie Formation passes upwards into peri-reefal facies of the Manín Fm where we designate the Malý Manín Member on the basis of rudists shell fragments and redeposited orbitolinids. Microfacies associations share similarities with the Urgonian-type microfacies from Mediterranean Tethys and allow us to restrict the growth and the demise of the carbonate platform. δ 13 C and δ 18 O isotopes change over a broad range of both formations: δ 13C is in the range +1.03 to +4.20 ‰ V-PDB and δ 18O is in the range −0.14 to −5.55 ‰ V-PDB. Although a close correlation between δ 13 C and δ 18 O indicates diagenetic overprint, a long-term increase of δ 13C can indicate a gradual increase in the aragonite production and/or increasing effects of oceanic water masses in the course of the Albian, prior to the final platform drowning. Carbonate platform evolution was connected with submarine slumps and debris flows leading to redeposition and accumulation of carbonate lithoclasts and bioclastic debris on the slope. Our study confirms that the growth of carbonate platforms in the Central Western Carpathians was stopped and the platform collapsed during the Albian, in contrast to the westernmost Tethys. A hardground formed during the Late Albian is overlain by Albian -Cenomanian marls of the Butkov Formation with calcisphaerulid limestones characterized by planktonic foraminifers of the Parathalmanninella appenninica Zone and calcareous dinoflagellates of the Innominata Acme Zone.

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“…Cathodoluminescence (CL), the emission of light when a mineral is irradiated by an electron beam, has been widely employed in mineralogical and petrological investigations, especially in sedimentology studies of carbonates (e.g., Machel et al, 1991;Boggs and Krinsley, 2006). In such studies, CL has the advantage that it can reveal features such as growth domains and zonation in the crystals, most of which are unrecognized under transmitted light.…”

Section: Introductionmentioning

confidence: 99%

Blue cathodoluminescence related to defect center in smithsonite

Nishido

Makio

Kusano

et al. 2013

Journal of Mineralogical and Petrological Sciences

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Smithsonite occasionally exhibits a characteristic blue emission, known as cathodoluminescence (CL), which can be assigned to a lattice defect center by CL spectral analysis. The intensity of this emission is reduced at higher temperatures, suggesting a temperature quenching phenomenon. The activation energy in the quenching process was evaluated by a least -square fit of the Arrhenius plots using the integrated intensity of the emission component, and was found to be ~ 0.03 eV for the defect center. According to the Mott -Seitz model, the quenching process can be interpreted by an increase in non -radiative transition at higher temperatures. The value of the activation energy for a blue emission caused by the defect center corresponds to the vibration energy of the O -Zn -O bending mode in the lattice. It implies that the temperature quenching energy might be transferred as a phonon to the specific lattice vibration.

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Application of Cathodoluminescence Imaging to the Study of Sedimentary Rocks

Cited by 167 publications

References 126 publications

Depositional Environment of the Lower Cretaceous (Upper Albian) Winton Formation At Isisford, Central-West Queensland, Australia, Inferred From Sandstone Concretions

Depositional Environment of the Lower Cretaceous (Upper Albian) Winton Formation At Isisford, Central-West Queensland, Australia, Inferred From Sandstone Concretions

An Albian demise of the carbonate platform in the Manín Unit (Western Carpathians, Slovakia)

Blue cathodoluminescence related to defect center in smithsonite

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