1-20 OF 42 RESULTS FOR

BSEI method

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 01 January 2004
Journal of Sedimentary Research (2004) 74 (1): 117-128.
... that integrates backscattered electron images (BSEI) with electron microprobe (EMP) analyses. This method, which allows derivation of excess O in opal-A that is then used as a proxy for the total water content of the opal-A, highlights microscale variations in the water content. Such mapping has a lower limit...
FIGURES | View All (9)
Journal Article
Published: 01 August 2009
Journal of Sedimentary Research (2009) 79 (8): 584-592.
...Paul Sardini; Abderrazak El Albani; Dimitri Pret; Stéphane Gaboreau; Marja Siitari-Kauppi; Daniel Beaufort Abstract Microporous aggregates of kaolin minerals and illite are common products filling the intergranular volume (IGV) of deeply buried sandstones. Using BSEi (backscattered electron...
FIGURES | View All (10)
Journal Article
Journal: Geology
Published: 01 August 2012
Geology (2012) 40 (8): 727-730.
... by standard bulk-sediment analysis, which destroys sedimentary fabrics and averages data within samples. Here we resolve and reconstruct seasonal-scale flux events from these sediments using backscattered electron imagery (BSEI) of resin-embedded sediment, a nondestructive technique that preserves...
FIGURES
Journal Article
Published: 01 November 2003
Journal of Sedimentary Research (2003) 73 (6): 1022-1035.
... and Reeder 1992 ; Fouke et al. 1996 ). Unfortunately, this method cannot be applied to dolomite crystals, like those in the dolostones found in the Cayman Formation on Grand Cayman, that lack the trace elements that produce cathodoluminescence (cf. Pleydell 1987 ). Backscatter electron imaging (BSEI...
FIGURES | View All (12)
Journal Article
Published: 01 February 1995
Journal of the Geological Society (1995) 152 (1): 119-129.
...-grained sediments, this method examines the fine porosity between clay size particles to be investigated. The usual problems associated with thresholding a grey-level image to provide the necessary binary image for analysis are partly overcome by the use of Wiener filtering methods to remove much...
Image
A-J)  Bivariant graphs for O (weight %) and excess O (atomic %) versus Si (...
Published: 01 January 2004
Figure 5 A-J) Bivariant graphs for O (weight %) and excess O (atomic %) versus Si (weight %) for light and dark areas of backscattered electron image of samples A (A, B), B (C, D), C (E, F), and D (G, H). E (I, J). Quartz, analyzed by the same method, is shown for comparison. K, L) Comparison
Journal Article
Published: 24 August 2018
Journal of the Geological Society (2018) 175 (6): 903-914.
... microanalysis of resin-embedded sediment. Together, the microfabric and geochemical methods enable the identification of clay layer mass transport deposits despite bioturbational mixing of the original end-members. Two cores with robust radionuclide chronologies contain correlative clay layers dated to 1979...
FIGURES | View All (9)
Journal Article
Journal: Interpretation
Published: 26 July 2013
Interpretation (2013) 1 (1): B7-B26.
... (centimeters to several meters) and member (tens of meters) scales. Because of the anisotropic nature of mudstones, elastic properties are not scalars at the length/thickness scales that can be defined using seismic methods. Properties of interest are likely to be different parallel to bedding compared...
FIGURES | View All (15)
Series: European Mineralogical Union Notes in Mineralogy
Published: 01 January 2010
DOI: 10.1180/EMU-notes.9.8
EISBN: 9780903056359
... performed by geologists using manual point-counting methods and basic stereological principles. If one aims to automate the process, it is essential to realise that images have to be acquired wherein individual minerals are contrasted as much as possible. This depends heavily on the quality of the imaging...
FIGURES | View All (52)
Series: SEPM Special Publication
Published: 01 January 2000
DOI: 10.2110/pec.00.66.0309
EISBN: 9781565761889
... Formation of South West England. Precise details of the methods employed to characterize both the stacking patterns and the composition of the diagenetic mineral assemblages present within these fine-grained successions can be found in Taylor and Curtis (1995) and Macquaker and Taylor (1996...
Journal Article
Published: 01 April 2008
Journal of Sedimentary Research (2008) 78 (4): 301-315.
... by a satellite peak on the low-angle side and a shoulder on the high angle side characterize the X-ray diffraction pattern of opal-CT ( Jones and Segnit 1971 ; Graetsch 1994 ; Smith 1998 ; Herdianita et al. 2000a ). Determination of the total water content by this method relies on the combined use...
FIGURES | View All (11)
Journal Article
Journal: Geology
Published: 01 November 2000
Geology (2000) 28 (11): 1007-1010.
.... We used backscatter electron imaging (BSEI) scanning electron microscope (SEM) analysis to determine the composition of laminae, laminae thickness measurements as a proxy for inter-annual variability in the fluxes that created the laminae, and time-series analysis to characterize the variability...
FIGURES | View All (4)
Journal Article
Journal: Clay Minerals
Published: 01 September 2000
Clay Minerals (2000) 35 (4): 719-733.
... microscopy (SEM) using a JEOL JSM6400. The contrast resulting from different atomic number in backscatter mode (BS) proved useful in locating suitable points for chemical analysis. Over 250 chemical analyses were undertaken by energy-dispersive X-ray methods (EDX) using a PGT IMIX system. Well-characterized...
FIGURES | View All (9)
Journal Article
Published: 01 June 2003
Mineralogical Magazine (2003) 67 (3): 509-516.
... whole-rock ages of 520 Ma ( Lasserre et al. , 1984 ). A CHIME (Chemical Th-U-total Pb isochron method: Suzuki et al. , 1991 ) monazite age of 510±25 Ma was reported for sample I-4 by Tetsopgang et al. (1999) . Sample I-4 is of greyish adamellite, which contains fine-grained quartz, oligoclase...
FIGURES | View All (7)
Journal Article
Published: 01 August 2005
Mineralogical Magazine (2005) 69 (4): 521-535.
... ). The sample was examined by EMPA, and also by use of transmission electron microscopy (TEM) for ion-thinned foils and by cathodoluminescence (CL). The EMPA and TEM methods are the same as those described by Nakano et al. (2002) , and SEI observations of hydrofluoric acidetched grains ( Waldron et al...
FIGURES | View All (13)
Journal Article
Published: 01 July 2004
Journal of the Geological Society (2004) 161 (4): 675-683.
... induced changes in storm frequency would progressively vary the organic content of the sediment and generate the climate cycle signal. 11 11 2003 28 5 2003 © 2004 The Geological Society of London 2004 Milankovitch theory Kimmeridge Clay organic matter high-resolution methods...
FIGURES | View All (4)
Journal Article
Published: 01 April 2009
Mineralogical Magazine (2009) 73 (2): 257-267.
..., sensitizers and quenchers, leading to only partial understanding of the CL. Methods such as secondary ion mass spectrometry (SIMS), proton induced X-ray emission (PIXE) and laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) are required for more complete characterization of the trace...
FIGURES | View All (4)
Journal Article
Published: 01 June 2006
Journal of Sedimentary Research (2006) 76 (6): 919-925.
... by metabolizing the by-products. Regardless of the precise method exploited, the degradation of the rootlets would induce a rate-limiting step into the process of Fe(III) reduction with only small quantities of bioavailable organic matter present at any given time. We therefore propose that Fe(III)-reducing...
FIGURES
Journal Article
Journal: Clay Minerals
Published: 01 December 2007
Clay Minerals (2007) 42 (4): 549-562.
... of the separated <2μm fraction, although more direct methods have been proposed. Spiers et al. (1983) demonstrated the potential of an ICP method, which uses direct aspiration of the suspended <2 μm fraction. Gold et al. (1983) analysed the clay fraction, after mixing with colloidal graphite, using...
FIGURES | View All (6)
Journal Article
Journal: Clay Minerals
Published: 01 March 2000
Clay Minerals (2000) 35 (1): 135-149.
... compositional variation within carbonate cements prior to backscatter electron imaging (BSEI), microprobe and stable isotopic analysis. Field emission electron microscopy (FEEM) allowed high-resolution secondary electron imaging (SEI) for detailed morphological investigation, particularly of the very fine...
FIGURES | View All (9)