The Cenozoic Southern Ocean: Tectonics, Sedimentation, And Climate Change Between Australia And Antarctica (geophysical Monograph Series)

Cenozoic Reconstructions Of The Australia-new Zealand-south Pacific Sector Of Antarctica / Steven C. Cande And Joann M. Stock -- Tectonics And Basin Development Of The Offshore Tasmanian Area Incorporating Results From Deep Ocean Drilling / Peter J. Hill And Neville F. Exon -- Cenozoic Environments In The Tasmanian Area Of The Southern Ocean (odp Leg 189) : Inferences From Bulk And Clay Mineralogy / Christian Robert -- On The Magnetostratigraphy Of The East Tasman Plateau, Timing Of The Opening Of The Tasmanian Gateway And Paleoenvironmental Changes / Mike Fuller And Yannick Touchard -- Magnetostratigraphy Of The Pliocene-pleistocene Sequence And Of The Eocene-oligocene Transition At Odp Leg 189 Hole 1168 / Y. Touchard And M. Fuller -- The Cretaceous/paleogene Transition On The East Tasman Plateau, Southwestern Pacific / Stephen A. Schellenberg [and Others] --^ On The Search For The Paleocene/eocene Boundary In The Southern Ocean : Exploring Odp Leg 189 Holes 1171d And 1172d, Tasman Sea / Ursula Röhl [and Others] -- Sea Level And Astronomically Induced Environmental Changes In Middle And Late Eocene Sediments From The East Tasman Plateau / Ursula Röhl [and Others] -- A Chemostratigraphic And Geochemical Facies Analysis Of Strata Deposited In An Eocene Australo-antarctic Seaway : Is Cyclicity Evidence For Glacioeustasy? / Timothy S. White -- Changes In South Ocean Circulation In Late Oligocene To Early Miocene Time / Helen A. Pfuhl [and Others] -- Quantitative Miocene Calcareous Nannofossil Biostratigraphy From The Tasmanian Gateway / Kristeen L. Mcgonigal -- Early To Middle Miocene Paleoceanography In The Southern High Latitudes Off Tasmania / Atsuhito Ennyu And Michael A. Arthur -- Paleoce[a]nographic Change During The Middle Miocene Climate Revolution : An Antarctic Stable Isotope Perspective / A.e. Shevenell And J.p. Kennett --^ Late Neogene History Of Paleoproductivity And Ice Rafting South Of Tasmania / Liselotte Diester-haass And Stefan Nees -- A Deep-sea Record Of The Late Miocene Carbon Shift From The Southern Tasman Sea / R.a. Tedford And D.c. Kelly -- Paleo-export Production, Terrigenous Flux And Sea Surface Temperatures Around Tasmania -- Implications For Glacial/interglacial Changes In The Subtropical Convergence Zone / Dirk Nürnberg [and Others] -- Tectono-sedimentary History Of Uppermost Cretaceous Through Oligocene Sequences From The Tasmanian Region, A Temperate Antarctic Margin / Neville F. Exon [and Others] -- Paleoceanographic Evolution Of The Tasmanian Seaway And Its Climatic Implications / James P. Kennett And Neville F. Exon. Neville F. Exon, James P. Kennett, Mitchell J. Malone, Editors. Includes Bibliographical References. The Cenozoic Southern Ocean:Tectonics, Sedimentation, and Climate Change Between Australia and Antartica......Page 3 Copyright......Page 4 CONTENTS......Page 5 Preface......Page 7 Introduction......Page 9 REFERENCES......Page 11 INTRODUCTION......Page 12 CONSTRAINTS......Page 14 RECONSTRUCTIONS......Page 17 REFERENCES......Page 23 Tectonics and Basin Development of the Offshore Tasmanian AreaIncorporating Results from Deep Ocean Drilling......Page 25 1. INTRODUCTION......Page 26 2. REGIONAL PLATE TECTONIC ANDGEOLOGICAL HISTORY......Page 27 3. CENOZOIC PLATE RECONSTRUCTIONS......Page 30 4. BASIN DEVELOPMENT ON THE MARGINSAND PLATEAUS......Page 31 5. DISCUSSION AND CONCLUSIONS......Page 44 REFERENCES......Page 46 1. INTRODUCTION......Page 49 3. ORIGIN AND SIGNIFICANCE OF THE MINERALS......Page 52 4. EVOLUTION OF CENOZOICPALEOENVIRONMENTS IN THE TASMANIAN AREA......Page 60 5. CONCLUSIONS......Page 65 REFERENCES......Page 66 INTRODUCTION......Page 69 METHODS......Page 70 RESULTS......Page 72 MAGNETOSTRATIGRAPHIC HIGHLIGHTS......Page 77 DISCUSSION......Page 81 CONCLUSIONS......Page 82 REFERENCES......Page 83 1. INTRODUCTION......Page 85 3. METHODS......Page 86 4. RESULTS......Page 88 5. INTERPRETATION......Page 92 6. DISCUSSION......Page 96 REFERENCES......Page 97 1. INTRODUCTION......Page 99 2. GEOLOGIC SETTING OF THE HOLE 1172D K-PTRANSITION......Page 100 3. METHODS......Page 101 4. RESULTS......Page 103 5. DISCUSSION......Page 114 REFERENCES......Page 116 INTRODUCTION......Page 119 UNIQUE LATEST PALEOCENE TO EARLY EOCENERECORDS FROM THE SOUTHERN OCEAN......Page 120 RESULTS......Page 122 SYNTHESIS AND CONCLUDING REMARKS......Page 128 REFERENCES......Page 129 Sea Level and Astronomically Induced Environmental Changes inMiddle and Late Eocene Sediments from the East Tasman Plateau......Page 132 STRATIGRAPHY AND ANALYTICAL METHODS......Page 133 RESULTS......Page 138 APPLICATIONS OF THE CYCLOSTRATIGRAPHYFOR INTERPRETING THE DEPOSITIONALENVIRONMENT......Page 151 REFERENCES......Page 154 INTRODUCTION......Page 157 EOCENE STRATAL STACKING PATTERNS FROMAUSTRALIA-ANTARCTIC A AND BEYOND......Page 158 HOLISTIC CHEMOSTRATIGRAPHIC APPROACHTO THE EOCENE STRATA......Page 159 DATA ANALYSIS......Page 160 RESULTS......Page 161 DISCUSSION......Page 168 CONCLUSIONS......Page 171 REFERENCES......Page 175 INTRODUCTION......Page 177 AGE MODELS......Page 179 METHODS......Page 181 RESULTS......Page 183 DISCUSSION......Page 184 CONCLUSIONS......Page 190 REFERENCES......Page 191 1. INTRODUCTION......Page 194 2. MATERIALS AND METHODS......Page 195 3. BIOSTRATIGRAPHIC RESULTS......Page 197 4. NANNOFOSSIL OBSERVATIONS......Page 207 5. SUMMARY......Page 214 REFERENCES......Page 215 1. INTRODUCTION......Page 217 2. MATERIALS AND METHODS......Page 218 3. RESULTS......Page 219 4. EFFECTS OF ISOTOPIC DISEQUILIBRIAAND SEASONALITY ON PLANKTONSTABLE ISOTOPES......Page 222 5. DISCUSSION......Page 228 REFERENCES......Page 232 INTRODUCTION......Page 236 METHODS......Page 238 RESULTS......Page 240 DISCUSSION......Page 247 CONCLUSIONS......Page 250 REFERENCES......Page 251 INTRODUCTION......Page 253 MATERIAL AND METHODS......Page 254 ANALYTICAL STRATEGIES......Page 255 RESULTS......Page 256 DISCUSSION......Page 264 REFERENCES......Page 270 INTRODUCTION......Page 273 REGIONAL HYDROGRAPHIC SETTING AND TECTONIC HISTORY......Page 274 METHODS......Page 276 RESULTS......Page 277 DISCUSSION......Page 281 REFERENCES......Page 287 Paleo-Export Production, Terrigenous Flux and Sea SurfaceTemperatures Around Tasmania - Implications for Glacial/InterglacialChanges in the Subtropical Convergence Zone......Page 291 INTRODUCTION......Page 292 MODERN HYDROGRAPHIC SETTING......Page 293 MATERIALS AND METHODS......Page 294 RESULTS AND DISCUSSION......Page 300 CONCLUSIONS......Page 314 REFERENCES......Page 315 Tectono-Sedimentary History of Uppermost Cretaceous ThroughOligocene Sequences From The Tasmanian Region,A Temperate Antarctic Margin......Page 319 BACKGROUND......Page 320 GEOLOGICAL DEVELOPMENT......Page 324 REFERENCES......Page 342 Paleoceanographic Evolution of the Tasmanian Seaway and ItsClimatic Implications......Page 345 1. INTRODUCTION......Page 346 2. MAJOR PHASES IN GATEWAY AND SEAWAYDEVELOPMENT......Page 347 3. CIRCULATION CHANGES RESULTING FROMGATEWAY OPENING......Page 357 4. COOLING AND CRYOSPHERE EXPANSION ATTHE EOCENE/OLIGOCENE BOUNDARY......Page 360 REFERENCES......Page 362 Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 151. Ocean circulation and hence global climate are nowhere more strongly changed than through the opening or closing of gateways or seaways that link major oceans. The break-up of Gondwana, and the northward flight of its continental fragments from Antarctica, is a case in point. Profound climatic consequences resulted from shifts in ocean and atmospheric circulation due to drastic changes in global geography. During the Cenozoic, the northward flight of southern continents led to the opening of gateways at southern high latitudes while progressively restricting and closing gateways in the low latitudes. Considerable previous research has dealt with the opening and expansion of the two Cenozoic gatewaysthe Tasmanian Gateway south of Australia and the Drake Passage south of Americawhich allowed the Antarctic Circumpolar Current (ACC) to develop and progressively isolate Antarctica thermally. It is generally accepted that full opening of the Tasmanian Gateway occurred earlier than that of Drake Passage, although the time of opening of Drake Passage remains controversial. It has long been proposed that a climatic threshold leading to major initial Antarctic ice sheet accumulation occurred during the Eocene-Oligocene transition as the Tasmanian Gateway opened, triggering ACC formation and resultant thermal isolation of the Antarctic continent (Gateway Hypothesis). South of Australia, Paleogene rifting slowly opened the Australo-Antarctic Gulf, but the Indian and Pacific Oceans remained separated by the Tasmanian land bridge until the latest Eocene, preventing earlier development of the ACC; waters derived from low latitudes efficiently transported heat towards the Antarctic continent, contributing to the maintenance of global greenhouse conditions. Early ocean drilling in the Tasmanian Gateway between Australia and Antarctica provided a basic framework of paleoenvironmental changes associated with the opening, but stratigraphic resolution was too limited to fully test potential interrelationships of plate tectonics, circum-polar circulation and global climate. So, until recently, the timing of events has been inadequately constrained. "With the fragmentation of Gondwana, the southern continents other than Antarctica drifted northward and the global climate changed. One of the two key separation points, Tasmania-Antarctica, the "Tasmanian Gateway," is the subject of this volume. What was the tectonic history of Tasmanian Gateway opening, and how did gateway development impact sediments, ocean circulation and climate? The Cenozoic Southern Ocean: Tectonics, Sedimentation, and Climate Change Between Australia and Antarctica responds to such questions withnew research and interpretations on three geological phases: the rifts before the gateway opened, the deepening gateway, and changes in this part of the Southern Ocean as Australia moved northward from Antarctica."--BOOK JACKET