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Ambenali Formation

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Journal Article
Published: 01 January 2009
Journal of Foraminiferal Research (2009) 39 (1): 40–55.
... lacustrine to brackish-marine ostracod assemblages near Jhilmili, Chhindwara District, India. These foraminiferal assemblages identify the K-T boundary in intertrappean sediments bracketed by basalt traps that are regionally correlative with C29R (Ambenali Formation) and the C29R-C29N transition...
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Journal Article
Published: 01 January 2009
Journal of the Geological Society (2009) 166 (1): 13–24.
... elevations, as does the altitude of the geochemically defined formation boundary (i.e. Ambenali–Mahabaleshwar Fms), which defines a second isochronous surface. Inspection reveals significant differences in the number and thickness of lava units preserved between these two surfaces. This indicates...
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Image
The Poladpur-Bushe contact as seen in the field (A) and in satellite images...
Published: 01 November 2015
Figure 3. The Poladpur-Bushe contact as seen in the field (A) and in satellite images using Google Earth (B–D). Abbreviations, from bottom to top stratigraphically: Bh—Bhimishankar Formation; K—Kandala Formation; B—Bushe Formation; P/B—Poladpur/Bushe terrace; P—Poladpur Formation; A—Ambenali
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The Poladpur-Bushe contact as seen in the field (A) and in satellite images...
Published: 01 November 2015
Figure 3. The Poladpur-Bushe contact as seen in the field (A) and in satellite images using Google Earth (B–D). Abbreviations, from bottom to top stratigraphically: Bh—Bhimishankar Formation; K—Kandala Formation; B—Bushe Formation; P/B—Poladpur/Bushe terrace; P—Poladpur Formation; A—Ambenali
Image
The Poladpur-Bushe contact as seen in the field (A) and in satellite images...
Published: 01 November 2015
Figure 3. The Poladpur-Bushe contact as seen in the field (A) and in satellite images using Google Earth (B–D). Abbreviations, from bottom to top stratigraphically: Bh—Bhimishankar Formation; K—Kandala Formation; B—Bushe Formation; P/B—Poladpur/Bushe terrace; P—Poladpur Formation; A—Ambenali
Image
The Poladpur-Bushe contact as seen in the field (A) and in satellite images...
Published: 01 November 2015
Figure 3. The Poladpur-Bushe contact as seen in the field (A) and in satellite images using Google Earth (B–D). Abbreviations, from bottom to top stratigraphically: Bh—Bhimishankar Formation; K—Kandala Formation; B—Bushe Formation; P/B—Poladpur/Bushe terrace; P—Poladpur Formation; A—Ambenali
Journal Article
Journal: Geology
Published: 01 January 2022
Geology (2022) 50 (1): 21–25.
...., 2019 ). However, the extrusion of the lava flows of the Ambenali Formation has also been considered a possible trigger for the Dan-C2 event ( Krahl et al., 2020 ). Our astronomically calibrated age model does not reveal a direct temporal link between the Dan-C2 event and the Ambenali Formation ( Fig...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 November 2015
GSA Bulletin (2015) 127 (11-12): 1507–1520.
...Figure 3. The Poladpur-Bushe contact as seen in the field (A) and in satellite images using Google Earth (B–D). Abbreviations, from bottom to top stratigraphically: Bh—Bhimishankar Formation; K—Kandala Formation; B—Bushe Formation; P/B—Poladpur/Bushe terrace; P—Poladpur Formation; A—Ambenali...
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Series: Geological Society, London, Special Publications
Published: 01 January 2017
DOI: 10.1144/SP445.3
EISBN: 9781786203281
... reversals in conjunction with field and chemical data support these findings. Further, these lavas are compositionally akin to Bushe, Poladpur, Ambenali and Mahableshwar Formational lavas, and follow the same stratigraphic order as in the Western Ghats. Alternating field (AFD) and thermal demagnetizations...
Journal Article
Published: 01 June 1991
Journal of the Geological Society (1991) 148 (3): 495–505.
... crystallization are typically manifest as shifts in the ranges of incompatible element abundances, and for instance, the ranges of Ba concentration within the Ambenali (50-100ppm) and Mahabaleshwar Formations (100-200 ppm) can be readily ascribed to 50% fractionation of a gabbroic assemblage (e.g. Cox & Devey...
Image
Map of the minimum (mapped) and maximum (inferred) areal extent of the Ambe...
Published: 01 November 2015
Figure 2. Map of the minimum (mapped) and maximum (inferred) areal extent of the Ambenali and/or Poladpur Formations. Solid circles indicate field locations ( Vanderkluysen et al., 2011 ) in which Ambenali and/or Poladpur have been found; open circles are locations where these formations have
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Comparison of the five sections where the palaeomagnetic reversal (29r–29n)...
Published: 01 January 2009
Fig. 4. Comparison of the five sections where the palaeomagnetic reversal (29r–29n) has been observed, showing the sampling locations (•). The stratigraphic columns have been aligned along the reversal boundary, and the geochemical boundary between the Ambenali and Mahabaleshwar Formations
Journal Article
Published: 01 January 2008
Journal of the Geological Society (2008) 165 (1): 177–188.
... corresponding to the Bhimashankar, Khandala and Bushe formations, as well as the more widespread outcrop of Poladpur and Ambenali chemotypes of the Wai Subgroup ( Fig. 1 ). The new geochemical data and map provide details of the stratigraphy and structure of the SE Deccan Volcanic Province. This information...
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(A) (i) Deccan subgroups and <span class="search-highlight">formations</span> ( Chenet et al., 2008 ). Additional...
Published: 01 November 2015
footprint area of the Deccan Traps ( Self et al., 2006 ). (iii) Volumes based on the assumption that the Poladpur, Ambenali, and Mahabaleshwar Formations cover circular footprint areas with radius 600 km, and that all the other formations have circular footprint areas with radius 250 km, as suggested
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(A) (i) Deccan subgroups and <span class="search-highlight">formations</span> ( Chenet et al., 2008 ). Additional...
Published: 01 November 2015
footprint area of the Deccan Traps ( Self et al., 2006 ). (iii) Volumes based on the assumption that the Poladpur, Ambenali, and Mahabaleshwar Formations cover circular footprint areas with radius 600 km, and that all the other formations have circular footprint areas with radius 250 km, as suggested
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Geochemical comparison for samples from the SE corner of the Deccan Volcani...
Published: 01 January 2008
Fig. 4.  Geochemical comparison for samples from the SE corner of the Deccan Volcanic Province (black symbols), the Killari borehole (open symbols) and the Rajahmundry Traps (dark grey diamonds, Baksi 2001 ; light grey diamonds, Cripps 2002 ). Triangles, Mahabaleshwar Fm; circles, Ambenali Fm
Journal Article
Journal: GSA Bulletin
Published: 01 January 2017
GSA Bulletin (2017) 129 (1-2): 253–255.
... in eruptive history between the Bushe and Poladpur Formations. The lack of penetration of fractures and faults in the upper flows (of Poladpur and Ambenali Formation from the Wai Subgroup) and their prevalence in the lower flows (of Bushe Formation (from the Lonavala Subgroup) are used by Richards et...
Journal Article
Journal: Geology
Published: 05 January 2022
Geology (2022) 50 (4): 460–464.
... the Ambenali Formation. While some trace element (TE) ratios (e.g., Lu/Gd; Fig.2B ) record weak trends stratigraphically, they do not mirror the distinct secular trend in Hf isotopes. Instead, zircon TE compositions commonly cluster for individual samples when plotted against ε Hf ( Fig.3 ), indicating...
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Journal Article
Published: 01 December 1991
Journal of the Geological Society (1991) 148 (6): 979–983.
... with average Ambenali and Poladpur Formations. Data from present study, Mahoney et al. (1982), Cox & Hawkesworth (1984,1985), Mahoney (1988), Lightfoot & Hawkesworth (1988) and Lightfoot et al. (1990). Normalizing factors from Hofmann (1988). 20"N I5ON t + + \ \ t 1 - 1 \ \ I I Fig. 4. Plate reconstruction...
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(A) Primordial-mantle–normalized, multielement plot of 85–90 Ma dikes in co...
Published: 01 January 2012
) and Tamatave (TAM) are from Storey et al. (1997) , and the evolved tholeiite (ET) is from Dostal et al. (1992) . The Deccan samples of lower Poladpur (LP), upper Poladpur (UP), and Mahabaleswar (MBR) formation are from Lightfoot and Hawkesworth (1988) , and the sample of Ambenali (AM) formation is from