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Palynology, sequence stratigraphy, and palaeoenvironments of middle to upper Jurassic strata, Bayu-Undan field, Timor Sea regionMantle, D. Unknown Date (has links)
No description available.
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Palynology, sequence stratigraphy, and palaeoenvironments of Middle to Upper Jurassic strata, Bayu-Undan Field, Timor Sea regionMantle, Daniel Unknown Date (has links)
Detailed palynological analysis of 230 core and sidewall core samples from the uppermost Plover, Elang, and lower Frigate formations, Bayu-Undan Field, Timor Sea, reveals the presence of diverse and moderately well preserved palynomorph assemblages (predominantly dinoflagellate cysts, together with acritarchs, spores, and pollen grains) that facilitate biostratigraphic, sequence stratigraphic, and palaeoenvironmental interpretations. The palynomorph assemblages, detailed systematically herein, comprise 96 spore and pollen species, 84 dinoflagellate species, and 15 acritarch species. Of these, the following 14 dinoflagellate cyst species are newly instituted: Ampulladinium aiax, Batiacasphaera macbethiae, Broomea fusticulum, Cauca bayuiana, Egmontodinium elongatum, Ellipsoidictyum fenestellum, Evansia? lacryma, Leberidocysta? strigosus, Leptodinium? ancoralium, Meiourogonyaulax baculata, Nannoceratopsis reticulata, Paragonyaulacysta? feneseptata, P. helbyi, and Yalkalpodinium playfordii. A further five species are not formally named due to a lack of adequately preserved specimens. One genus, Broomea COOKSON&EISENACK, is formally emended. The palynostratigraphic sequence has previously been assessed as latest Bathonian to early Oxfordian in age, based mainly on correlations with European dinoflagellate assemblages dated by ammonite faunas. Ten subzones (TB1-5 and VT1-5) are informally erected, collectively encompassing the Ternia balmei and Voodooia tabulata dinoflagellate cyst Interval Zones. The subzones are defined variously on first and last appearance datums, first and last common occurrences, and species acmes. The acme events are coincident with marine flooding surfaces and enable precise correlation across the Bayu-Undan Field. The Elang Formation the prime focus of this study is divided into three third order sequences, each comprising a lowstand, transgressive, and highstand systems tract. These tracts and their delimiting stratal horizons or flooding surfaces possess distinctive palynological or palynodebris assemblages. Qualitative and quantitative variations of these assemblages correlate very closely with gamma-ray log profiles and can be consistently placed within a sequence stratigraphic framework across the Bayu- Undan Field. Palynofacies analyses provide additional means to distinguish among the systems tracts; viz., microphytoplankton diversity increases through transgressive systems tracts to a peak diversity at the maximum flooding surface; atypically brown wood frequencies may also peak at maximum flooding surfaces; and black debris frequencies increase higher in the highstand systems tracts. Palaeoenvironmental interpretations based primarily on palynological assemblages (especially microphytoplankton groupings and palynodebris distribution) provide a means to identify depositional settings in non-cored intervals. For instance, the occurrences of Ternia balmei, the Meiourogonyaulax group, the Ctenidodinium group, and the Rigaudella group represent an approximate gradient from very nearshore to offshore environments or possibly an increase in salinities from euryhaline to stenohaline conditions.
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Palynology, sequence stratigraphy, and palaeoenvironments of Middle to Upper Jurassic strata, Bayu-Undan Field, Timor Sea regionMantle, Daniel Unknown Date (has links)
Detailed palynological analysis of 230 core and sidewall core samples from the uppermost Plover, Elang, and lower Frigate formations, Bayu-Undan Field, Timor Sea, reveals the presence of diverse and moderately well preserved palynomorph assemblages (predominantly dinoflagellate cysts, together with acritarchs, spores, and pollen grains) that facilitate biostratigraphic, sequence stratigraphic, and palaeoenvironmental interpretations. The palynomorph assemblages, detailed systematically herein, comprise 96 spore and pollen species, 84 dinoflagellate species, and 15 acritarch species. Of these, the following 14 dinoflagellate cyst species are newly instituted: Ampulladinium aiax, Batiacasphaera macbethiae, Broomea fusticulum, Cauca bayuiana, Egmontodinium elongatum, Ellipsoidictyum fenestellum, Evansia? lacryma, Leberidocysta? strigosus, Leptodinium? ancoralium, Meiourogonyaulax baculata, Nannoceratopsis reticulata, Paragonyaulacysta? feneseptata, P. helbyi, and Yalkalpodinium playfordii. A further five species are not formally named due to a lack of adequately preserved specimens. One genus, Broomea COOKSON&EISENACK, is formally emended. The palynostratigraphic sequence has previously been assessed as latest Bathonian to early Oxfordian in age, based mainly on correlations with European dinoflagellate assemblages dated by ammonite faunas. Ten subzones (TB1-5 and VT1-5) are informally erected, collectively encompassing the Ternia balmei and Voodooia tabulata dinoflagellate cyst Interval Zones. The subzones are defined variously on first and last appearance datums, first and last common occurrences, and species acmes. The acme events are coincident with marine flooding surfaces and enable precise correlation across the Bayu-Undan Field. The Elang Formation the prime focus of this study is divided into three third order sequences, each comprising a lowstand, transgressive, and highstand systems tract. These tracts and their delimiting stratal horizons or flooding surfaces possess distinctive palynological or palynodebris assemblages. Qualitative and quantitative variations of these assemblages correlate very closely with gamma-ray log profiles and can be consistently placed within a sequence stratigraphic framework across the Bayu- Undan Field. Palynofacies analyses provide additional means to distinguish among the systems tracts; viz., microphytoplankton diversity increases through transgressive systems tracts to a peak diversity at the maximum flooding surface; atypically brown wood frequencies may also peak at maximum flooding surfaces; and black debris frequencies increase higher in the highstand systems tracts. Palaeoenvironmental interpretations based primarily on palynological assemblages (especially microphytoplankton groupings and palynodebris distribution) provide a means to identify depositional settings in non-cored intervals. For instance, the occurrences of Ternia balmei, the Meiourogonyaulax group, the Ctenidodinium group, and the Rigaudella group represent an approximate gradient from very nearshore to offshore environments or possibly an increase in salinities from euryhaline to stenohaline conditions.
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Palynology, sequence stratigraphy, and palaeoenvironments of Middle to Upper Jurassic strata, Bayu-Undan Field, Timor Sea regionMantle, Daniel Unknown Date (has links)
Detailed palynological analysis of 230 core and sidewall core samples from the uppermost Plover, Elang, and lower Frigate formations, Bayu-Undan Field, Timor Sea, reveals the presence of diverse and moderately well preserved palynomorph assemblages (predominantly dinoflagellate cysts, together with acritarchs, spores, and pollen grains) that facilitate biostratigraphic, sequence stratigraphic, and palaeoenvironmental interpretations. The palynomorph assemblages, detailed systematically herein, comprise 96 spore and pollen species, 84 dinoflagellate species, and 15 acritarch species. Of these, the following 14 dinoflagellate cyst species are newly instituted: Ampulladinium aiax, Batiacasphaera macbethiae, Broomea fusticulum, Cauca bayuiana, Egmontodinium elongatum, Ellipsoidictyum fenestellum, Evansia? lacryma, Leberidocysta? strigosus, Leptodinium? ancoralium, Meiourogonyaulax baculata, Nannoceratopsis reticulata, Paragonyaulacysta? feneseptata, P. helbyi, and Yalkalpodinium playfordii. A further five species are not formally named due to a lack of adequately preserved specimens. One genus, Broomea COOKSON&EISENACK, is formally emended. The palynostratigraphic sequence has previously been assessed as latest Bathonian to early Oxfordian in age, based mainly on correlations with European dinoflagellate assemblages dated by ammonite faunas. Ten subzones (TB1-5 and VT1-5) are informally erected, collectively encompassing the Ternia balmei and Voodooia tabulata dinoflagellate cyst Interval Zones. The subzones are defined variously on first and last appearance datums, first and last common occurrences, and species acmes. The acme events are coincident with marine flooding surfaces and enable precise correlation across the Bayu-Undan Field. The Elang Formation the prime focus of this study is divided into three third order sequences, each comprising a lowstand, transgressive, and highstand systems tract. These tracts and their delimiting stratal horizons or flooding surfaces possess distinctive palynological or palynodebris assemblages. Qualitative and quantitative variations of these assemblages correlate very closely with gamma-ray log profiles and can be consistently placed within a sequence stratigraphic framework across the Bayu- Undan Field. Palynofacies analyses provide additional means to distinguish among the systems tracts; viz., microphytoplankton diversity increases through transgressive systems tracts to a peak diversity at the maximum flooding surface; atypically brown wood frequencies may also peak at maximum flooding surfaces; and black debris frequencies increase higher in the highstand systems tracts. Palaeoenvironmental interpretations based primarily on palynological assemblages (especially microphytoplankton groupings and palynodebris distribution) provide a means to identify depositional settings in non-cored intervals. For instance, the occurrences of Ternia balmei, the Meiourogonyaulax group, the Ctenidodinium group, and the Rigaudella group represent an approximate gradient from very nearshore to offshore environments or possibly an increase in salinities from euryhaline to stenohaline conditions.
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Palynology, sequence stratigraphy, and palaeoenvironments of Middle to Upper Jurassic strata, Bayu-Undan Field, Timor Sea regionMantle, Daniel Unknown Date (has links)
Detailed palynological analysis of 230 core and sidewall core samples from the uppermost Plover, Elang, and lower Frigate formations, Bayu-Undan Field, Timor Sea, reveals the presence of diverse and moderately well preserved palynomorph assemblages (predominantly dinoflagellate cysts, together with acritarchs, spores, and pollen grains) that facilitate biostratigraphic, sequence stratigraphic, and palaeoenvironmental interpretations. The palynomorph assemblages, detailed systematically herein, comprise 96 spore and pollen species, 84 dinoflagellate species, and 15 acritarch species. Of these, the following 14 dinoflagellate cyst species are newly instituted: Ampulladinium aiax, Batiacasphaera macbethiae, Broomea fusticulum, Cauca bayuiana, Egmontodinium elongatum, Ellipsoidictyum fenestellum, Evansia? lacryma, Leberidocysta? strigosus, Leptodinium? ancoralium, Meiourogonyaulax baculata, Nannoceratopsis reticulata, Paragonyaulacysta? feneseptata, P. helbyi, and Yalkalpodinium playfordii. A further five species are not formally named due to a lack of adequately preserved specimens. One genus, Broomea COOKSON&EISENACK, is formally emended. The palynostratigraphic sequence has previously been assessed as latest Bathonian to early Oxfordian in age, based mainly on correlations with European dinoflagellate assemblages dated by ammonite faunas. Ten subzones (TB1-5 and VT1-5) are informally erected, collectively encompassing the Ternia balmei and Voodooia tabulata dinoflagellate cyst Interval Zones. The subzones are defined variously on first and last appearance datums, first and last common occurrences, and species acmes. The acme events are coincident with marine flooding surfaces and enable precise correlation across the Bayu-Undan Field. The Elang Formation the prime focus of this study is divided into three third order sequences, each comprising a lowstand, transgressive, and highstand systems tract. These tracts and their delimiting stratal horizons or flooding surfaces possess distinctive palynological or palynodebris assemblages. Qualitative and quantitative variations of these assemblages correlate very closely with gamma-ray log profiles and can be consistently placed within a sequence stratigraphic framework across the Bayu- Undan Field. Palynofacies analyses provide additional means to distinguish among the systems tracts; viz., microphytoplankton diversity increases through transgressive systems tracts to a peak diversity at the maximum flooding surface; atypically brown wood frequencies may also peak at maximum flooding surfaces; and black debris frequencies increase higher in the highstand systems tracts. Palaeoenvironmental interpretations based primarily on palynological assemblages (especially microphytoplankton groupings and palynodebris distribution) provide a means to identify depositional settings in non-cored intervals. For instance, the occurrences of Ternia balmei, the Meiourogonyaulax group, the Ctenidodinium group, and the Rigaudella group represent an approximate gradient from very nearshore to offshore environments or possibly an increase in salinities from euryhaline to stenohaline conditions.
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Palynology, sequence stratigraphy, and palaeoenvironments of Middle to Upper Jurassic strata, Bayu-Undan Field, Timor Sea regionMantle, Daniel Unknown Date (has links)
Detailed palynological analysis of 230 core and sidewall core samples from the uppermost Plover, Elang, and lower Frigate formations, Bayu-Undan Field, Timor Sea, reveals the presence of diverse and moderately well preserved palynomorph assemblages (predominantly dinoflagellate cysts, together with acritarchs, spores, and pollen grains) that facilitate biostratigraphic, sequence stratigraphic, and palaeoenvironmental interpretations. The palynomorph assemblages, detailed systematically herein, comprise 96 spore and pollen species, 84 dinoflagellate species, and 15 acritarch species. Of these, the following 14 dinoflagellate cyst species are newly instituted: Ampulladinium aiax, Batiacasphaera macbethiae, Broomea fusticulum, Cauca bayuiana, Egmontodinium elongatum, Ellipsoidictyum fenestellum, Evansia? lacryma, Leberidocysta? strigosus, Leptodinium? ancoralium, Meiourogonyaulax baculata, Nannoceratopsis reticulata, Paragonyaulacysta? feneseptata, P. helbyi, and Yalkalpodinium playfordii. A further five species are not formally named due to a lack of adequately preserved specimens. One genus, Broomea COOKSON&EISENACK, is formally emended. The palynostratigraphic sequence has previously been assessed as latest Bathonian to early Oxfordian in age, based mainly on correlations with European dinoflagellate assemblages dated by ammonite faunas. Ten subzones (TB1-5 and VT1-5) are informally erected, collectively encompassing the Ternia balmei and Voodooia tabulata dinoflagellate cyst Interval Zones. The subzones are defined variously on first and last appearance datums, first and last common occurrences, and species acmes. The acme events are coincident with marine flooding surfaces and enable precise correlation across the Bayu-Undan Field. The Elang Formation the prime focus of this study is divided into three third order sequences, each comprising a lowstand, transgressive, and highstand systems tract. These tracts and their delimiting stratal horizons or flooding surfaces possess distinctive palynological or palynodebris assemblages. Qualitative and quantitative variations of these assemblages correlate very closely with gamma-ray log profiles and can be consistently placed within a sequence stratigraphic framework across the Bayu- Undan Field. Palynofacies analyses provide additional means to distinguish among the systems tracts; viz., microphytoplankton diversity increases through transgressive systems tracts to a peak diversity at the maximum flooding surface; atypically brown wood frequencies may also peak at maximum flooding surfaces; and black debris frequencies increase higher in the highstand systems tracts. Palaeoenvironmental interpretations based primarily on palynological assemblages (especially microphytoplankton groupings and palynodebris distribution) provide a means to identify depositional settings in non-cored intervals. For instance, the occurrences of Ternia balmei, the Meiourogonyaulax group, the Ctenidodinium group, and the Rigaudella group represent an approximate gradient from very nearshore to offshore environments or possibly an increase in salinities from euryhaline to stenohaline conditions.
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The megafossil and microfossil floras of the Curlew Formation, Queensland /Rowett, A. January 1986 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, 1988. / Includes amendments (8 p.) in pocket. Includes bibliographical references (leaves 306-331).
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An analysis of palynomorphs from upper Cretaceous sedimentary rocks with emphasis in the Aguja Formation, Big Bend National Park, Brewster County, Texas /Baghai, Nina Lucille, January 1996 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1996. / Vita. Includes bibliographical references (leaves 446-493). Available also in a digital version from UMI Company.
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The palynology of selected Ordovician localities in ScotlandWhelan, Gillian Mary. January 1988 (has links)
Thesis (Ph.D.) - University of Glasgow, 1988. / Ph.D. thesis submitted to the Faculty of Science, Department of Geology, University of Glasgow, 1988. BLL : DX170958/93. Includes bibliographical references. Print version also available.
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Palynological and palaeobotanical studies in the Southern Cape /Scholtz, Anton. January 1986 (has links)
Thesis (M.A.)--University of Stellenbosch, 1986. / Includes bibliographical references. Also available via the Internet.
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