G.a. Ludvigson
Lawrence, KS
Activity
2021
-
VOLCANOGENIC ZIRCONS FROM MUDROCKS AND CHRONOSTRATIGRAPHIC REFINEMENT OF THE CRETACEOUS CEDAR MOUNTAIN FORMATION, UTAH
4 A Matter of Time I: Using High-Resolution Stratigraphic and Sedimentologic Techniques to Investigate the Mid-Continent Geologic RecordSunday, 18 April 20211:00 PM - 5:00 PMUALR Earth Science Room
2020
-
REFINING THE CHRONOSTRATIGRAPHY OF THE CRETACEOUS CEDAR MOUNTAIN FORMATION, UTAH USING VOLCANOGENIC ZIRCON FROM MATURE PALEOSOLS
236 D5. GeochronologyFriday, 30 October 202010:00 AM - 2:00 PMMeeting Rooms
2018
-
PALEOTEMPERATURE AND PALEOPRECIPITATION ANALYSIS OF PALEOSOLS FROM THE EARLY CRETACEOUS RUBY RANCH MEMBER OF THE CEDAR MOUNTAIN FORMATION, EAST-CENTRAL UTAH
11 D3. Climate and Landscape EvolutionMonday, 12 March 20181:30 PM - 3:45 PMChicot Room
2017
-
URANIUM-LEAD AGES OF CRETACEOUS (ALBIAN-CENOMANIAN) STRATA FROM THE ROSE CREEK ESCARPMENT OF THE CRATONIC MARGIN OF THE WESTERN INTERIOR BASIN
T303 The Timing and Causes of Jurassic–Cretaceous Biological, Climatic, and Tectonic Transitions in North AmericaWednesday, 25 October 20178:00 AM - 12:00 PMRoom 611
-
PETROGRAPHIC, XRD, AND CLUMPED ISOTOPE STUDY OF A CRETACEOUS DOLOMITIC LAKE IN NORTHWEST CHINA
2 Advances in the Application and Development of Terrestrial Paleoclimate ProxiesMonday, 13 March 20178:00 AM - 12:00 PMGrand Ballroom F
2015
-
STABLE ISOTOPE PALEOHYDROLOGY OF PEDOGENIC CARBONATES IN THE WAYAN AND BLACKLEAF FORMATIONS (MID-CRETACEOUS) OF IDAHO AND MONTANA
T285 Paleosol Case Studies: Resurrecting Ancient Critical Zones through Space and TimeWednesday, 4 November 20158:00 AM - 12:00 PMRoom 345/346
2014
-
NEW ADDITIONS TO THE NORTH AMERICAN MID-CRETACEOUS PALEOPRECIPITATION δ18O DATASET: INTEGRATION OF PEDOGENIC CARBONATE AND VERTEBRATE FOSSIL PROXIES
T253 Proxies for PaleoprecipitationTuesday, 21 October 20141:00 PM - 5:00 PM207
-
THE QUEST FOR PRECISION IN STRATIGRAPHY AND THE QUANTIFICATION OF STRATIGRAPHIC UNCERTAINTY
176 StratigraphyTuesday, 21 October 20148:00 AM - 12:00 PM221/222
-
LATE PLEISTOCENE EOLIAN SEDIMENTATION, SOIL DEVELOPMENT AND CLIMATE CHANGE ON THE HIGH PLAINS OF SOUTHWESTERN KANSAS
T40 Soil Development: Its Role in Geological Processes (Posters)Sunday, 19 October 20149:00 AM - 5:00 PMExhibition Hall C
-
DEVELOPMENT OF A SCIENTIFIC DRILLING PROGRAM IN CENOZOIC STRATA OF THE GREAT PLAINS IN KANSAS AND NEBRASKA
21 Cenozoic Stratigraphy of the Great PlainsFriday, 25 April 20141:30 PM - 5:00 PMArbor 2
-
INVESTIGATIONS OF THE LITHO- AND SOIL-STRATIGRAPHY OF PLIO-PLEISTOCENE STRATA IN THE CIMARRON RIVER VALLEY, SOUTHWESTERN KANSAS
21 Cenozoic Stratigraphy of the Great PlainsFriday, 25 April 20141:30 PM - 5:00 PMArbor 2
-
PRELIMINARY RESULTS OF LITHO- AND CHRONOSTRATIGRAPHIC INVESTIGATIONS OF THE MCPHERSON CHANNEL DEPOSITS IN SOUTH CENTRAL KANSAS
21 Cenozoic Stratigraphy of the Great PlainsFriday, 25 April 20141:30 PM - 5:00 PMArbor 2
-
DEVELOPING A REFINED MAGNETOSTRATIGRAPHY FOR THE WHITE RIVER GROUP AND OGALLALA FORMATION IN SOUTHWESTERN KANSAS: PRELIMINARY RESULTS FROM THE HIGH PLAINS-OGALLALA DRILLING PROJECT
18 Sedimentology and Stratigraphy (Posters)Friday, 25 April 20148:00 AM - 12:00 PMLancaster Ballroom
2013
-
EXPLORING THE ROLE OF THE HYDROLOGIC CYCLE IN ARCTIC AMPLIFICATION DURING THE GREENHOUSE WORLDS OF THE CRETACEOUS AND PALEOGENE
T406 Ancient Polar Ecosystems and Climate History in Deep TimeWednesday, 30 October 20131:00 PM - 5:00 PMRoom 607
-
RECENT PROGRESS ON THE PEDOGENIC SIDERITE PALEOCLIMATE PROXY
T320 Pedogenic Minerals as Indicators of Ecosystems: Understanding the Critical Zone through Space and TimeWednesday, 30 October 20138:00 AM - 12:00 PMRoom 504
-
PALEOGENE STRATA OF THE HIGH PLAINS IN WESTERN KANSAS? PRELIMINARY RADIOMETRIC DATES FROM VOLCANOGENIC ZIRCONS IN MATURE PALEOSOLS
195 Recent Advances in Stratigraphic ResearchTuesday, 29 October 20138:00 AM - 12:00 PMMile High Ballroom 4EF
-
ATMOSPHERIC CARBON DIOXIDE AND ITS RELATION TO CARBON CYCLE PERTURBATIONS DURING OCEAN ANOXIC EVENT 1D: A HIGH RESOLUTION RECORD FROM DISPERSED PLANT CUTICLE
128 Recent Advances in Paleoclimatology/Paleooceanography (Posters)Monday, 28 October 20139:00 AM - 6:30 PMHall D
-
ALLUVIAL ARCHITECTURE, PALEOSOLS, VERTIC FEATURES, AND PRELIMINARY CHEMOSTRATIGRAPHY OF THE YELLOW CAT MEMBER (LOWER CRETACEOUS) OF THE CEDAR MOUNTAIN FORMATION IN GRAND COUNTY, UTAH, USA
41 Recent Advances in Stratigraphic Research (Posters)Sunday, 27 October 20139:00 AM - 6:30 PMHall D
-
NEW MAGNETIC POLARITY DATA FROM THE HIGH PLAINS-OGALLALA DRILLING PROJECT CORE HP1A: A PRELIMINARY MAGNETOSTRATIGRAPHY FROM THE EOCENE-OLIGOCENE WHITE RIVER GROUP, SOUTHWESTERN KANSAS
41 Recent Advances in Stratigraphic Research (Posters)Sunday, 27 October 20139:00 AM - 6:30 PMHall D
-
CHRONOSTRATIGRAPHIC INVESTIGATIONS OF THE MCPHERSON CHANNEL DEPOSITS IN SOUTH CENTRAL KANSAS: PRELIMINARY INTERPRETATIONS FROM PARTICLE SIZE AND STABLE ISOTOPIC ANALYSES
41 Recent Advances in Stratigraphic Research (Posters)Sunday, 27 October 20139:00 AM - 6:30 PMHall D
2012
-
STRATIGRAPHIC, CHEMOSTRATIGRAPHIC, AND GEOCHEMICAL INVESTIGATIONS OF THE FIRST INTACT DRILL CORE OF THE NEOGENE HIGH PLAINS SUCCESSION IN WESTERN KANSAS
T248 Terrestrial Proxies of Paleoclimate and Paleoenvironment in Deep Time (Posters)Wednesday, 7 November 20129:00 AM - 6:00 PMHall B
-
ICHNOLOGY AND CALCRETE STRATIGRAPHY OF THE NEOGENE OGALLALA FORMATION, HIGH PLAINS OF WESTERN KANSAS
T223 Topics in Paleoecology: Predation/Biotic Interactions, Fidelity/Taphonomy, and Community Ecology/Whole Organism Paleoecology IIIWednesday, 7 November 20128:00 AM - 12:00 PM217D
-
A CAST OF THOUSANDS: PRELIMINARY ANALYSIS OF A WESTERN HARVESTER ANT NEST CAST IN ALUMINUM FROM WESTERN KANSAS AND COMPARISONS WITH ICHNOFOSSILS OF PURPORTED FORMICIDAE CONSTRUCTION
210 Paleontology: Modern Analogues and Reconstructing BehaviorWednesday, 7 November 20128:00 AM - 12:00 PM217A
-
WHAT'S THE LOW DOWN ON SOIL-FORMED SIDERITE?: MODERN PROCESS STUDIES AND VALIDATION OF A DEEP TIME TERRESTRIAL PALEOCLIMATE PROXY
T147 Terrestrial Proxies of Paleoclimate and Paleoenvironment in Deep TimeTuesday, 6 November 20128:00 AM - 12:00 PM202AB
-
GEOLOGIC MAPPING AND SUBSURFACE INVESTIGATIONS OF EQUUS BEDS AQUIFER SEDIMENTS IN SOUTH-CENTRAL KANSAS
T96 Geologic Maps, Digital Geologic Maps, and Derivatives from Geologic and Geophysical Maps (Posters)Monday, 5 November 20129:00 AM - 6:00 PMHall B
-
PROGRESS AND PROSPECTS FOR CARBON ISOTOPE CHEMOSTRATIGRAPHY OF EARLY CRETACEOUS TERRESTRIAL STRATA
22 Climate Change: Past, Present and FutureTuesday, 24 April 20129:00 AM - 12:00 PMRoom 202
2011
-
EARLY CRETACEOUS BASELINE ATMOSPHERIC pCO2 AND BUILDUP ESTIMATED FROM A CALCRETE SUCCESSION, CEDAR MOUNTAIN FORMATION, UTAH, USA
T258 Advances in Terrestrial Paleoclimatology and Paleoecology: Geochemical Techniques and Examples Using Inorganic and Organic Molecules in Fossil Soils, Plants, Invertebrates, and Vertebrates (Posters)Wednesday, 12 October 20119:00 AM - 6:00 PMHall C
-
ACTUALISTIC CALIBRATION OF THE PEDOGENIC SIDERITE PALEOCLIMATE PROXY
T258 Advances in Terrestrial Paleoclimatology and Paleoecology: Geochemical Techniques and Examples Using Inorganic and Organic Molecules in Fossil Soils, Plants, Invertebrates, and Vertebrates (Posters)Wednesday, 12 October 20119:00 AM - 6:00 PMHall C
-
SALVAGE SURVEY OF AN EARLY CRETACEOUS DINOSAUR TRACKWAY SITE IN ARKANSAS
99 Paleontology (Posters) II: Extinction and EnvironmentMonday, 10 October 20119:00 AM - 6:00 PMHall C
-
INVESTIGATIONS OF LATE CRETACEOUS ARCTIC PALEOHYDROLOGY BY INTEGRATION OF TERRESTRIAL STABLE ISOTOPE PROXIES
T58 Advances in Terrestrial Paleoclimatology and Paleoecology: Geochemical Techniques and Examples Using Inorganic and Organic Molecules in Fossil Soils, Plants, Invertebrates, and Vertebrates ISunday, 9 October 20111:30 PM - 5:30 PMRoom 200FG
-
EXPLORING THE PALEOCLIMATIC RECORD OF TERRESTRIAL APTIAN-ALBIAN CARBON ISOTOPE EXCURSIONS IN THE EARLY CRETACEOUS CEDAR MOUNTAIN FORMATION OF EASTERN UTAH
9 Paleontology and PaleoclimatologyWednesday, 18 May 20111:30 PM - 5:00 PMCottonwood
2010
-
THE TERRESTRIAL PALEOCLIMATIC RECORD OF THE APTIAN-ALBIAN C9-C11 CARBON ISOTOPE EXCURSION IN THE CRETACEOUS NORTH AMERICAN FORELAND BASIN OF EASTERN UTAH, USA
229 Recent Advances in Paleoclimatology/PaleoceanographyWednesday, 3 November 20108:00 AM - 12:00 PMRoom 607
-
INAUGURATION OF A SCIENTIFIC DRILLING PROGRAM INVESTIGATING THE LITHOLOGY AND STRATIGRAPHY OF NEOGENE STRATA OF THE CENTRAL HIGH PLAINS AQUIFER IN WESTERN KANSAS
175 Stratigraphy Geology (Posters)Tuesday, 2 November 20108:00 AM - 6:00 PMHall D
-
PROBING A CLIMATE MODEL-DATA MISFIT REGARDING THE OXYGEN ISOTOPIC COMPOSITION OF ARCTIC PRECIPITATION IN THE CRETACEOUS GREENHOUSE WORLD
T47 Links between Mesozoic Climate and Biodiversity (Posters)Sunday, 31 October 20108:00 AM - 6:00 PMHall D
2009
-
FORMATION OF HISTORICAL PEDOGENIC SIDERITE IN PAH-CONTAMINATED ALLUVIAL CLAY SOILS, TENNESSEE, USA: PART I: INSIGHTS FROM FIELD RELATIONSHIPS AND MICROMORPHOLOGY
T111 The Present is the Key to the Past: Identifying and Characterizing Isotopic Pattern and Process in Modern Ecosystems (Posters)Monday, 19 October 20099:00 AM - 6:00 PMHall A
-
FORMATION OF HISTORICAL PEDOGENIC SIDERITE IN PAH-CONTAMINATED ALLUVIAL CLAY SOILS, TENNESSEE, USA: PART II: STABLE ISOTOPIC DATA ON MODERN ANALOGUE FOR A DEEP-TIME PALEOCLIMATE PROXY
T19 The Present is the Key to the Past: Identifying and Characterizing Isotopic Pattern and Process in Modern EcosystemsSunday, 18 October 20098:00 AM - 12:00 PMPortland Ballroom 255
-
A RECORD OF CARBON AND OXYGEN ISOTOPE EXCURSIONS FROM PEDOGENIC CARBONATES OF THE NEOGENE HIGH PLAINS SUCCESSION IN WESTERN KANSAS
36 Stratigraphy: A Global Perspective (Posters)Sunday, 18 October 20099:00 AM - 6:00 PMHall A
-
EXCEPTIONALLY WELL-PRESERVED ANT NEST FOSSILS IN CALCIC PALEOSOLS OF THE OGALLALA FORMATION (MIOCENE), SCOTT COUNTY, KANSAS, USA
51 Paleontology: Movement & DistributionSunday, 18 October 20091:30 PM - 5:30 PMPortland Ballroom 255
-
SEASONAL INFLUENCE OF CHANGING HYDROLOGY ON PEDOGENIC CARBONATE FORMATION IN VERTISOLS, DANCE BAYOU, BRAZORIA COUNTY, TX: IMPLICATIONS FOR THE QUANTIFICATION OF PAST ATMOSPHERIC pCO2
T19 The Present is the Key to the Past: Identifying and Characterizing Isotopic Pattern and Process in Modern EcosystemsSunday, 18 October 20098:00 AM - 12:00 PMPortland Ballroom 255
-
RADIOMETRIC CALIBRATION OF THE STABLE ISOTOPE CHEMOSTRATIGRAPHY OF THE EARLY CRETACEOUS CEDAR MOUNTAIN FORMATION
3 Climate ChangeThursday, 2 April 20098:00 AM - 12:00 PM
2008
-
Pedogenic Siderite as a Tool for Reconstructing Paleoprecipitation: A Decade of Research on Ancient Hydrologic Cycles and a New Research Frontier for Hydromorphic Soil Systems
205 Critical Zone Studies of Soils and Weathering: Implications for Interpreting Climate and Landscapes of the PastMonday, 6 October 20081:30 PM - 5:30 PM
-
Stable Isotope Proxies for Polar Paleoprecipitation in Ancient Greenhouse Worlds
T164 Ancient Polar Ecosystems and Environments: Proxies for Understanding Climate Change and Global WarmingSunday, 5 October 20081:30 PM - 4:45 PM
-
EVIDENCE FOR A REGIONALLY PERSISTENT CARBON ISOTOPIC CHEMOSTRATIGRAPHY IN THE NEOGENE HIGH PLAINS SUCCESSSION OF WESTERN KANSAS
15 Late Neogene Continental Ecosystems of North AmericaThursday, 24 April 20081:15 PM - 5:00 PM
2007
-
TESTING A CARBON ISOTOPIC STRATIGRAPHIC AGE MODEL FOR THE NEOGENE HIGH PLAINS SUCCESSSION IN WESTERN KANSAS
122 StratigraphyTuesday, 30 October 20078:00 AM - 12:00 PM
-
PRELIMINARY ANALYSIS OF THE UPPER JURASSIC MORRISON FORMATION IN THE REBECCA BOUNDS CORE, WESTERN KANSAS
122 StratigraphyTuesday, 30 October 20078:00 AM - 12:00 PM
-
CARBONATE CARBON ISOTOPE EXCURSIONS IN THE RUBY RANCH MEMBER OF THE CEDAR MOUNTAIN FORMATION AND THEIR TERRESTRIAL PALEOCLIMATIC IMPACTS
13 Utah's Lower Cretaceous Cedar Mountain Formation: Advances in Geology ITuesday, 8 May 20078:00 AM - 11:50 AM
-
WHEN CARBONATES SPEAK: RECONSTRUCTING MID-CRETACEOUS PALEOCLIMATE AND PALEOENVIRONMENT FROM CARBONATES IN THE RUBY RANCH MEMBER OF THE CEDAR MOUNTAIN FORMATION
19 Utah's Lower Cretaceous Cedar Mountain Formation: Advances in Geology IITuesday, 8 May 20072:00 PM - 4:30 PM
-
DEVELOPING A CARBON ISOTOPE CHEMOSTRATIGRAPHIC APPROACH TO UNDERSTANDING NEOGENE STRATIGRAPHIC ARCHITECTURE OF THE HIGH PLAINS SUCCESSSION IN WESTERN KANSAS
33 Neogene Depositional Environments, Paleoclimatology and Stratigraphic Architecture of the Succession Forming the High Plains AquiferFriday, 13 April 20078:20 AM - 12:00 PM
-
MAMMALIAN ENAMEL AND FLOODPLAIN CARBONATE OXYGEN ISOTOPE RECORDS OF MIDDLE PALEOCENE PALEOCLIMATE, CRAZY MOUNTAINS BASIN, MONTANA
42 Insights from Cretaceous-Paleogene Paleoenvironments and Deposition: Glimpses of the GreenhouseFriday, 13 April 20071:20 PM - 5:00 PM
-
PEDOGENIC SPHAEROSIDERITES FROM THE CABALLOS FORMATION (APTIAN-ALBIAN) OF COLOMBIA: A STABLE ISOTOPE PROXY FOR CRETACEOUS PALEOEQUATORIAL PRECIPITATION
42 Insights from Cretaceous-Paleogene Paleoenvironments and Deposition: Glimpses of the GreenhouseFriday, 13 April 20071:20 PM - 5:00 PM
2006
-
COMING TO GRIPS WITH THE EVAPORATION RATES RECORDED IN ANCIENT SOILS: INTERPRETING DIAGENETIC TRENDS FROM VADOSE & PHREATIC COMPONENTS IN CALCIC PALEOSOLS
T221 Paleosols, Proxies, and Paleoenvironments IIWednesday, 25 October 20061:30 PM - 5:30 PM
-
PRECIPITATION RATES AND ATMOSPHERIC HEAT TRANSPORT DURING THE CENOMANIAN GREENHOUSE WARMING IN NORTH AMERICA
202 Paleoclimatology/Paleoceanography: Proxies, Patterns, and Processes (Posters)Wednesday, 25 October 20068:00 AM - 12:00 PM
-
PETROGRAPHIC AND ISOTOPIC INVESTIGATION OF DEPOSITIONAL ENVIRONMENTS IN THE EARLY CRETACEOUS (APTIAN-ALBIAN) TLAYÚA QUARRY, MEXICO
T161 Better Living Through Geochemistry: Fostering an Understanding of Terrestrial Paleoenvironments and PaleoclimatesTuesday, 24 October 20061:30 PM - 5:30 PM
-
METEORIC SPHAEROSIDERITE LINES FROM THE ATOKAN (LANGSETTIAN) CROOKED FORK GROUP, EASTERN TENNESSEE: A FIRST-CUT COMPARISON BETWEEN PALEOEQUATORIAL PRECIPITATION RATES FROM THE CARBONIFEROUS ICEHOUSE AND CRETACEOUS GREENHOUSE WORLDS
2 Carboniferous Sedimentology and StratigraphyThursday, 20 April 20068:00 AM - 12:20 PM
Date Unknown
-
Carbon Isotopic Chemostratigraphy of Neogene Strata In the High Plains Succession of Kansas
194 Paleoclimatology/Paleoceanography (Posters)