A5067693161- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Geological Studies and Exploration
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- Earthquake and Disaster Impact Studies
- Landslides and related hazards
- Geological and Geophysical Studies
- Earthquake Detection and Analysis
- Seismic Waves and Analysis
- Geomagnetism and Paleomagnetism Studies
- Botany and Geology in Latin America and Caribbean
- Seismic Performance and Analysis
Monash University
2020-2024
Syracuse University
2022
Australian Regenerative Medicine Institute
2021
University of Louisiana at Lafayette
2017
Abstract Understanding of secular evolution the Earth system is based largely on rock and mineral archive preserved in continental lithosphere. Based frequency range accessible data this record, we divide into seven phases: (a) “ Proto‐Earth ” (ca. 4.57–4.45 Ga); (b) Primordial 4.45–3.80 (c) Primitive 3.8–3.2 (d) “Juvenile 3.2–2.5 (e) Youthful 2.5–1.8 (f) Middle 1.8–0.8 (g) Contemporary (since ca. 0.8 Ga). Integrating record with knowledge cooling mantle lithospheric rheology constrains...
Abstract The dominant tectonic mode operating on early Earth (before ca. 2.5 Ga) remains elusive, with an increasing body of evidence suggesting that non-plate modes were likely more prevalent at time. Thus, how plate tectonics evolved after contentious. We performed two-dimensional numerical modeling mantle convection temperatures appropriate for the Hadean–Archean eons and show subduction rift systems may have spontaneously emerged from earlier drip-and-rift–dominated in response to...
Abstract The Midcontinent Rift of North America is a ca. 1.1 Ga, 3000-km-long failed rift that nearly split the Precambrian continent Laurentia. Unlike most continental rifts, which are filled with mixture volcanic rocks and sediments, contains large volume flood basalts were emplaced during both syn- post-rift stages. Consequently, Rift, comprises Keweenaw igneous province, significant positive anomaly on gravity maps central America. We investigated mantle conditions required to produce...
Lithospheric yield stress is a key parameter in controlling tectonic processes. Using high resolution, 2D numerical modelling, we calculate the for range of conditions appropriate to early-to-mid Archean Earth, including hotter mantle potential temperatures and Moho temperatures. We then evaluate its effect on generating tonalite-trondhjemite-granodiorite (TTG) crust benchmark results against preserved igneous rock record. Our indicate that lithospheric values lower than present-day (i.e. ≤...
<p>Modeling details, including the initial model setup and additional figures. </p>
<p>Modeling details, including the initial model setup and additional figures. </p>
<p>Modeling details, including the initial model setup and additional figures. </p>
The Earth has evolved into a habitable planet through ongoing and complex cycling. Decades of field studies, geochemical analyses computational approaches to integrate data feasible geodynamic models reveal that Earth&#8217;s evolution was not linear but in discrete phases. timing changes between these phases, their loci within crust or cratonic terranes, most importantly the drivers tipping point for changes, remain elusive.Integrating record from continental archive with knowledge...
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]Weaker lithospheric dripduction into Archean TTG crust formationAuthorsPrasanna M.GunawardanaiDGabrieleMorraiDPriyadarshiChowdhuryPeter A.CawoodiDSee all authors Prasanna M. GunawardanaiDCorresponding Author• Submitting AuthorSchool of EarthAtmosphere EnvironmentMonash UniversityAustraliaiDhttps://orcid.org/0000-0003-1875-011Xview email addressThe was not providedcopy addressGabriele...
<p>Method details, additional supporting figures, and animations. </p>
<p>Method details, additional supporting figures, and animations. </p>
&lt;p&gt;The tectonic regime of the early Earth is crucial to understand how interior and exterior elements interacted make our planet habitable (Cawood et al., 2018). Our understanding processes involved far from complete, particularly about switch between non-plate plate regimes may have happened during Archean. In this study, we investigate Archean subduction events (albeit isolated intermittent) evolved within/from a stagnant-lid regime. We perform 2D numerical modelling mantle...
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]Do Archean cratons impact initiation of subduction?AuthorsPrasanna MaheshGunawardanaGabrieleMorraiDPriyadarshiChowdhuryFabioCapitanioiDPeterCawoodiDSee all authors Prasanna Mahesh GunawardanaCorresponding Author• Submitting AuthorSchool EarthAtmosphere EnvironmentMonash UniversityAustraliaview email addressThe was not providedcopy addressGabriele MorraiDDepartment Physics, University...