2017
DOI: 10.1111/sed.12371
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In situ characterization of dolomite crystals: Evaluation of dolomitization process and its effect on zoning

Abstract: Dolomitization is a dissolution–re‐precipitation process which proceeds via micrometre‐scale interface reaction horizons. However, the effect of this fundamental local medium of replacement process on precipitated dolomite crystals is rarely investigated. For this purpose, dolomite samples of Ordovician Boat Harbour Formation carbonates (Newfoundland, Canada) from Main Brook and Daniel's Harbour (about 150 km apart) were studied. The investigation used high‐resolution approaches to carry out imaging and elemen… Show more

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Cited by 22 publications
(9 citation statements)
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References 63 publications
(149 reference statements)
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“…Dolomite cores of MU-1 appear much brighter in BSE compared to their concentric enclosing rims, probably due to higher Mg/Ca ratio and minor concentration of Fe (Fig. 5A; Olanipekun and Azmy, 2017). Dolomite crystals from sample KM-1 display mainly a concentric zoning pattern with a very thin lamina separating core from rim.…”
Section: Textural Characteristics Effecting Ablation Efficiencymentioning
confidence: 97%
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“…Dolomite cores of MU-1 appear much brighter in BSE compared to their concentric enclosing rims, probably due to higher Mg/Ca ratio and minor concentration of Fe (Fig. 5A; Olanipekun and Azmy, 2017). Dolomite crystals from sample KM-1 display mainly a concentric zoning pattern with a very thin lamina separating core from rim.…”
Section: Textural Characteristics Effecting Ablation Efficiencymentioning
confidence: 97%
“…5B). Such signature is likely to be associated with the mechanism of epigenetic dolomitization governed by diagenetic replacement of pore fluids and re-precipitation of dolomite (Putnis & Putnis, 2007;Olanipekun & Azmy, 2017).Within the large fragments of breccia sample EFN-1, a mixture of different zoning patterns can be seen: dolomite crystals that lack distinctive core to rim zones and crystals with two zones of bright cores and dark rims (Fig. 5C).…”
Section: Textural Characteristics Effecting Ablation Efficiencymentioning
confidence: 98%
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“…D r a f t SEM (FEI, Hilsboro, OR, USA), which is equipped with an energy dispersive X-ray (EDS) microanalytical system (Bruker AXS, XFlash Detector 4010; Bruker Corporation, Billerica, MA, USA). The CL system is equipped with three detectors that correspond to red, green and blue colors, thus showing image colors that are very close to those of real luminescence emitted from the studied samples (e.g., Olanipekun and Azmy 2017). The images were obtained at 15 kV acceleration voltage and 13 nA beam current.…”
Section: Heterorthina Macfarlani Neuman 1967 Is From the Logana Membmentioning
confidence: 99%
“…hamper to decipher the geochemical records by only using bulk samples. Therefore, high-resolution in situ trace elemental analyses can provide much better constraints on tracing the origins of diagenetic fluids in burial diagenesis (Olanipekun, Azmy, & Hollis, 2017;Wang et al, 2009;Zhang, Guan, Jian, Feng, & Zou, 2014).…”
mentioning
confidence: 99%