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Geological and Geophysical Studies
Research Guide
What is Geological and Geophysical Studies?
Geological and geophysical studies comprise the scientific investigation of Earth's solid Earth materials, structures, processes, and physical properties using field observations, seismic methods, gravity measurements, and stratigraphic analysis.
The field encompasses 125,122 published works focused on topics including sea level changes, plate tectonics, and basin evolution. Key contributions include sequence stratigraphy for identifying sea level cycles as detailed in 'Chronology of Fluctuating Sea Levels Since the Triassic' by Haq et al. (1987) with 7165 citations. Advances in satellite altimetry have produced global sea floor topography maps at 1-12 km resolution, as shown by Smith and Sandwell (1997) with 4670 citations.
Research Sub-Topics
Sea Level Changes Chronology
Researchers construct eustatic curves from stratigraphic and isotopic data spanning Triassic to present, modeling glacio-eustatic fluctuations. Studies integrate sequence stratigraphy.
Plate Tectonics of SE Asia
This sub-topic reconstructs Cenozoic evolution using GPS, paleomagnetism, and computer models of Indonesian and SW Pacific margins. Focuses on collision and subduction dynamics.
Ocean Basin Magmatism
Studies map mid-ocean ridge and hotspot volcanism, analyzing geochemical signatures of MORB and OIB. Research links magmatism to mantle plumes and spreading rates.
Satellite Altimetry Seafloor Topography
Researchers derive global bathymetry from gravity anomalies via models like Sandwell versions, validating against ship soundings. Applications include tectonic interpretations.
Cenozoic Geochronology
This area refines timescale using radiometric dating, magnetostratigraphy, and orbital tuning for epochs. Updates integrate with geomagnetic polarity reversals.
Why It Matters
Geological and geophysical studies underpin resource exploration, hazard assessment, and environmental management through applications like sequence stratigraphy for subsurface hydrocarbon reservoirs documented in 'Chronology of Fluctuating Sea Levels Since the Triassic' by Haq et al. (1987). High-resolution sea floor topography from satellite altimetry and ship soundings enables mapping of ocean basin features such as 1600-km-long fracture zones, supporting navigation and tectonic modeling per Smith and Sandwell (1997). Recent funding includes $1.1 million from the U.S. Geological Survey for hyperspectral remote sensing and $2.9 million for coastal resilience research involving the Alaska Division of Geological and Geophysical Surveys.
Reading Guide
Where to Start
'Chronology of Fluctuating Sea Levels Since the Triassic' by Haq et al. (1987), as it introduces sequence stratigraphy fundamentals applied to global sea level records, accessible via seismic and outcrop data.
Key Papers Explained
Haq et al. (1987) 'Chronology of Fluctuating Sea Levels Since the Triassic' establishes sequence stratigraphy for sea level cycles, extended by Haq et al. (1988) 'MESOZOIC AND CENOZOIC CHRONOSTRATIGRAPHY AND CYCLES OF SEA-LEVEL CHANGE' to Mesozoic records using unconformities. Berggren et al. (1995) 'A Revised Cenozoic Geochronology and Chronostratigraphy' provides timescale calibration with magnetobiostratigraphy, supporting Hall (2002) 'Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific'. Smith and Sandwell (1997) 'Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings' adds bathymetric data for tectonic reconstructions.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Recent preprints examine igneous rocks in Jezero Crater, Mars, linking basalt and olivine cumulate compositions. Integrated surveys target tungsten deposits in South China by Liu and Shao. USGS funds $1.1 million for hyperspectral imaging; Alaska projects advance coastal resilience with $2.9 million.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Chronology of Fluctuating Sea Levels Since the Triassic | 1987 | Science | 7.2K | ✕ |
| 2 | Magmatism in the Ocean Basins | 1989 | Archives d'anatomie, d... | 6.0K | ✕ |
| 3 | Global Sea Floor Topography from Satellite Altimetry and Ship ... | 1997 | Science | 4.7K | ✕ |
| 4 | Geology of mankind | 2002 | Nature | 4.2K | ✓ |
| 5 | A Revised Cenozoic Geochronology and Chronostratigraphy | 1995 | SEPM (Society for Sedi... | 3.0K | ✕ |
| 6 | Cenozoic geological and plate tectonic evolution of SE Asia an... | 2002 | Journal of Asian Earth... | 2.5K | ✕ |
| 7 | Tectonics of the Indonesian region | 1979 | USGS professional paper | 2.1K | ✓ |
| 8 | Continental stretching: An explanation of the Post‐Mid‐Cretace... | 1980 | Journal of Geophysical... | 2.0K | ✕ |
| 9 | MESOZOIC AND CENOZOIC CHRONOSTRATIGRAPHY AND CYCLES OF SEA-LEV... | 1988 | SEPM (Society for Sedi... | 2.0K | ✕ |
| 10 | Maps of Pleistocene sea levels in Southeast Asia: shorelines, ... | 2000 | Journal of Biogeography | 1.9K | ✕ |
In the News
News release from the US Geological Survey (17 Jan. ...
News release from the US Geological Survey (17 Jan. 2026). "The U.S. Geological Survey has announced it will invest approximately $1.1 million in Bipartisan Infrastructure Law funding to collect hi...
$2.9 Million Awarded for Research to Inform Coastal ... - NCCOS
* **George Mason University, University of Alaska Fairbanks, University of Alaska Anchorage**, and**Alaska Division of Geological and Geophysical Surveys**will advance the co-production of natural ...
Funding awarded to UK/Canadian critical mineral research ...
# Funding awarded to UK/Canadian critical mineral research projects BGS is part of a groundbreaking science partnership aiming to improve critical minerals mining and supply chains. 08/07/2025By BG...
Kootenay Lake, Canada geothermal project receives ...
The South Kootenay Lake Community Services Society has received almost $100,000 in funding from the Rural Economic Diversification and Infrastructure Program (REDIP) to conduct electrical resistivi...
Geoscientific research in Canada's North
GEM-GeoNorth is not currently accepting applications for grant funding. For more information on previous grants, visit the Geoscience, multidisciplinary and Northern academia research grants recipi...
Code & Tools
## Repository files navigation # Knowledge-driven-stochastic-modeling Code for "Knowledge-driven stochastic modeling of geological geometry featu...
Welcome to the Vector Geology repository, a collaborative platform integrating a suite of geophysical and remote sensing data processing tools deve...
Simulation and Parameter Estimation in Geophysics - A python package for simulation and gradient based parameter estimation in the context of geoph...
pyGIMLi is an open-source library for modelling and inversion and in geophysics. The object-oriented library provides management for structured and...
geoana is a collection of (mostly) analytic functions in geophysics. We take an object oriented approach with the aim of having users be able to re...
Recent Preprints
Journal of Geophysical Research: Planets - Wiley Online Library
Key Points Igneous rocks on the floor of Jezero Crater, Mars, include basalts and olivine-rich igneous cumulates (the Séítah formation) The chemical composition of the magma...
Progress in Earth and Planetary Science
*Progress in Earth and Planetary Sciences*******is a peer-reviewed open access journal published under the SpringerOpen brand. It provides a platform for scholars to present review papers and origi...
Integrated Geophysical and Geochemical Surveys for ...
# Integrated Geophysical and Geochemical Surveys for Assessing Mineral Potential in the Xintianling Tungsten Deposit, Nanling Range, South China by Wei Liu Wei Liu SciProfiles Scilit Preprints.or...
Geology articles within Scientific Reports
- Hossein Gholizadeh - , T. Prabhakar Clement - & Yong Zhang - Article 27 June 2025\| Open Access - Hany Samy Ibrahim - , Walid M. Mabrouk - & Ahmed M. Metwally - Article 20 June 2025\| Op...
Peer-Reviewed Publications - 2025
Hunt, B. B., Droxler, A. W., Lehrmann, D.J., and Khanna, P., 2025, Mill Springs Limestone Submember (new) of the Point Peak Member, Wilberns Formation, Moore Hollow Group, Texas, in Orndorff, R. C....
Latest Developments
Recent developments in geological and geophysical studies include the discovery of rapid species evolution after the end-Cretaceous extinction (as of January 2026), detailed imaging of subducting slabs revealing basalt-rich anomalies at the 660 km discontinuity, and advances in understanding the lithosphere–asthenosphere boundary and melt focusing beneath mid-ocean ridges (all supported by recent publications from the Geological Society of America and Nature Communications, respectively) (GSA, Nature, Nature). Additionally, conferences like the Global Geology 2026 in Rome aim to address Earth sciences and sustainability challenges (Times Scientific Group).
Sources
Frequently Asked Questions
What methods identify sea level cycles in geological records?
Sequence stratigraphy and depositional models recognize genetically related sedimentary packages bounded by unconformities in seismic, well-log, and outcrop data. Haq et al. (1987) in 'Chronology of Fluctuating Sea Levels Since the Triassic' applied these to chart fluctuations since the Triassic. The approach links subsurface data to outcrop evidence for global correlation.
How was global sea floor topography mapped at high resolution?
Smith and Sandwell (1997) combined ship depth soundings with Geosat and ERS-1 satellite gravity data to produce a 1-12 km resolution digital bathymetric map. This revealed features like 1600-km-long fracture zones absent in prior maps. The method integrates marine gravity anomalies with soundings for complete ocean coverage.
What explains subsidence in the North Sea Basin post-Mid-Cretaceous?
Sclater and Christie (1980) attributed central North Sea Basin subsidence to continental stretching after Triassic graben formation and Middle Jurassic to mid-Cretaceous extension. Thermal subsidence followed rifting, filling the basin with Paleozoic to Recent sediments. The model matches observed basin depths and sediment thicknesses.
How do researchers reconstruct Cenozoic geochronology?
Berggren et al. (1995) revised Cenozoic timescales using new magneto- and biostratigraphic data plus radioisotopic ages. They calibrated key points from prior scales like Berggren et al. (1985). The update incorporates global marine outcrop records for chronostratigraphy.
What characterizes tectonics in subduction zones?
Hamilton (1979) identified subduction zones by ophiolite, melange, wildflysch, blueschist, and calc-alkaline igneous rocks above Benioff zones in 'Tectonics of the Indonesian region'. Truncations mark orogenic belt disruptions. The framework traces plate-tectonic evolution regionally.
What are applications of geophysical surveys in mineral exploration?
Integrated geophysical and geochemical surveys assess mineral potential, as in the Xintianling Tungsten Deposit study by Liu and Shao. Electrical resistivity tomography supports geothermal projects like Kootenay Lake, funded at nearly $100,000. These methods condition stochastic models on drillholes, outcrops, and geophysics.
Open Research Questions
- ? How do olivine-rich cumulates in Jezero Crater basalts relate to parental magma compositions on Mars?
- ? What stochastic modeling approaches best integrate drillhole, outcrop, and geophysical data for geological geometry?
- ? How do integrated geophysical surveys precisely delineate tungsten deposit boundaries in the Nanling Range?
- ? What natural infrastructure solutions emerge from coastal resilience studies in Alaska?
- ? How do Pleistocene sea level maps refine biogeographic models in Southeast Asia?
Recent Trends
Field sees 125,122 works with active preprints on Mars igneous petrology in Jezero Crater and Xintianling tungsten surveys by Liu and Shao.
Funding rises with USGS $1.1 million for hyperspectral remote sensing and $2.9 million NCCOS coastal awards to Alaska Division of Geological and Geophysical Surveys (2025).
2026Open-source tools like SimPEG and pyGIMLi support geophysical inversion; Vector Geology compiles modeling algorithms.
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