Mark D. Hannington
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View article: Archean rifts and triple-junctions revealed by gravity modeling of the southern Superior Craton
Archean rifts and triple-junctions revealed by gravity modeling of the southern Superior Craton Open
The nature of Archean tectonics and the associated geodynamic regimes are much debated in modern geoscience, despite decades of research. In this study, we present a geophysical model to show that, by the Neoarchean, convective forces from…
View article: Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea
Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea Open
During research expedition SO299 with the German RV Sonne , we discovered the first deep-sea hydrothermal vent system along the Tabar-Lihir-Tanga-Feni island chain in northeastern Papua New Guinea. The Karambusel vent field is hosted by a …
View article: A New Geological Map of the Marginal Basins of Eastern Papua New Guinea: Implications for Crustal Accretion and Mineral Endowment at Arc–Continent Collisions
A New Geological Map of the Marginal Basins of Eastern Papua New Guinea: Implications for Crustal Accretion and Mineral Endowment at Arc–Continent Collisions Open
Accretion of island arc terranes is a fundamental process of crustal growth and the formation of new continents. Convergent margin tectonics, both compressional and extensional, in accretionary orogens also control the origin and distribut…
View article: Hydrous mantle melting controls gold enrichment in Kermadec arc magmas
Hydrous mantle melting controls gold enrichment in Kermadec arc magmas Open
Many economic gold deposits on Earth are associated with volcanic arcs. However, little is known about the factors that control the gold endowment of the parental arc magmas. Here, we present new high-precision geochemical data from submar…
View article: Reconstructing the nature of the metamorphic basement in the Cyclades, Greece, by the isotopic signature of hydrothermal minerals
Reconstructing the nature of the metamorphic basement in the Cyclades, Greece, by the isotopic signature of hydrothermal minerals Open
In complex continental back-arc settings, such as the Cycladic realm of southeast Greece, polymetallic mineralization can provide information about past tectonic events and help to reconstruct the architecture of the metamorphic basement. …
View article: Quantifying crustal growth in the Lau arc-backarc system through gravity inverse modelling
Quantifying crustal growth in the Lau arc-backarc system through gravity inverse modelling Open
The formation and evolution of arc-backarc systems govern crustal production in some of the most volcanically and hydrothermally active environments on Earth. Geologic mapping of these systems is increasingly possible by interpretation of …
View article: Geochemical Signatures of Mafic Volcanic Rocks in Modern Oceanic Settings and Implications for Archean Mafic Magmatism
Geochemical Signatures of Mafic Volcanic Rocks in Modern Oceanic Settings and Implications for Archean Mafic Magmatism Open
Greenstone belts are dominated by mafic volcanic rocks with geochemical characteristics that indicate a range of possible geodynamic influences. Many analogies with modern tectonic settings have been suggested. Increasing exploration of th…
View article: Origin of Hydrothermal Barite in Polymetallic Veins and Carbonate-Hosted Deposits of the Cyclades Continental Back Arc
Origin of Hydrothermal Barite in Polymetallic Veins and Carbonate-Hosted Deposits of the Cyclades Continental Back Arc Open
Polymetallic veins and breccias and carbonate-replacement ore deposits in the Cyclades continental back arc, Greece, formed from a range of fluid and metal sources strongly influenced by the dynamics of the late Mesozoic-Cenozoic Hellenic …
View article: Identifying Probable Submarine Hydrothermal Spots in North Santorini Caldera Using the Generalized Moments Method
Identifying Probable Submarine Hydrothermal Spots in North Santorini Caldera Using the Generalized Moments Method Open
The presence of active hydrothermal vent fields near residential areas and their possible link to volcanic activity poses a potential hazard to the environment, society, and the economy. By capitalizing on Autonomous Underwater Vehicle sam…
View article: Taxonomic diversity of microbial communities in sub-seafloor hydrothermal sediments of the active Santorini-Kolumbo volcanic field
Taxonomic diversity of microbial communities in sub-seafloor hydrothermal sediments of the active Santorini-Kolumbo volcanic field Open
Introduction Active hydrothermal vents of volcanic origin provide a remarkable manifestation of life on Earth under extreme conditions, which may have consequences for our understanding of habitability on other terrestrial bodies as well. …
View article: Extension Dynamics of the Northern Fonualei Rift and Spreading Center and the Southern Mangatolu Triple Junction in the Lau Basin at 16°S
Extension Dynamics of the Northern Fonualei Rift and Spreading Center and the Southern Mangatolu Triple Junction in the Lau Basin at 16°S Open
Due to the complexity of 2D magnetic anomaly maps north of 18°S and the sparsity of seismic data, the tectonic evolution of the northern Lau Basin has not yet been unraveled. We use a multi‐method approach to reconstruct the formation of t…
View article: Conductivity and Temperature as indicators of hydrothermal activity: A comparison of two submarine volcanoes (Greece)
Conductivity and Temperature as indicators of hydrothermal activity: A comparison of two submarine volcanoes (Greece) Open
The presence of active hydrothermal vent fields near residential areas and their possible link to volcanic activity pose a potential natural hazard to the environment, to society, and to the economy. Despite the importance of risk assessme…
View article: Geochemical Signatures of Felsic Volcanic Rocks in Modern Oceanic Settings and Implications for Archean Greenstone Belts
Geochemical Signatures of Felsic Volcanic Rocks in Modern Oceanic Settings and Implications for Archean Greenstone Belts Open
Felsic volcanic rocks are abundant in ancient greenstone belts and important host rocks for volcanogenic massive sulfide (VMS) deposits. About half of all VMS deposits are hosted by dacite or rhyolite, an association that reflects anomalou…
View article: SANTORY: SANTORini’s Seafloor Volcanic ObservatorY
SANTORY: SANTORini’s Seafloor Volcanic ObservatorY Open
Submarine hydrothermal systems along active volcanic ridges and arcs are highly dynamic, responding to both oceanographic (e.g., currents, tides) and deep-seated geological forcing (e.g., magma eruption, seismicity, hydrothermalism, and cr…
View article: A new geological map of the Lau Basin (southwestern Pacific Ocean) reveals crustal growth processes in arc-backarc systems
A new geological map of the Lau Basin (southwestern Pacific Ocean) reveals crustal growth processes in arc-backarc systems Open
A 1:1,000,000-scale lithostratigraphic assemblage map of the Lau Basin (southwestern Pacific Ocean) has been created using remote predictive mapping (RPM) techniques developed by geological surveys on land. Formation-level geological units…
View article: Geologic and Structural Evolution of the NE Lau Basin, Tonga: Morphotectonic Analysis and Classification of Structures Using Shallow Seismicity
Geologic and Structural Evolution of the NE Lau Basin, Tonga: Morphotectonic Analysis and Classification of Structures Using Shallow Seismicity Open
The transition from subduction to transform motion along horizontal terminations of trenches is associated with tearing of the subducting slab and strike-slip tectonics in the overriding plate. One prominent example is the northern Tonga s…
View article: Geologic and Structural Evolution of the NE Lau Basin, Tonga: Morphotectonic Analysis and Classification of Structures using Shallow Seismicity
Geologic and Structural Evolution of the NE Lau Basin, Tonga: Morphotectonic Analysis and Classification of Structures using Shallow Seismicity Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Other. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints prep…
View article: Structural Control, Evolution, and Accumulation Rates of Massive Sulfides in the TAG Hydrothermal Field
Structural Control, Evolution, and Accumulation Rates of Massive Sulfides in the TAG Hydrothermal Field Open
The Trans‐Atlantic Geotraverse (TAG) hydrothermal field on the Mid‐Atlantic Ridge is one of the best‐studied hydrothermal systems to date. However, high‐resolution bathymetric data obtained in 2016 by an autonomous underwater vehicle (AUV)…
View article: Anhydrite‐Assisted Hydrothermal Metal Transport to the Ocean Floor—Insights From Thermo‐Hydro‐Chemical Modeling
Anhydrite‐Assisted Hydrothermal Metal Transport to the Ocean Floor—Insights From Thermo‐Hydro‐Chemical Modeling Open
High‐temperature hydrothermal venting has been discovered on all modern mid‐ocean ridges at all spreading rates. Although significant strides have been made in understanding the underlying processes that shape such systems, several first‐o…
View article: Crustal Structure of the Niuafo'ou Microplate and Fonualei Rift and Spreading Center in the Northeastern Lau Basin, Southwestern Pacific
Crustal Structure of the Niuafo'ou Microplate and Fonualei Rift and Spreading Center in the Northeastern Lau Basin, Southwestern Pacific Open
The northeastern Lau Basin is one of the fastest opening and magmatically most active back‐arc regions on Earth. Although the current pattern of plate boundaries and motions in this complex mosaic of microplates is reasonably understood, t…
View article: CTD data profiling to assess the natural hazard of active submarine vent fields: the case of Santorini Island
CTD data profiling to assess the natural hazard of active submarine vent fields: the case of Santorini Island Open
Almost three quarters of known volcanic activity on Earth occurs in underwater locations. The presence of active hydrothermal vent fields in such environments is a potential natural hazard for the environment, the society, and the economy.…
View article: Shallow Seismicity and the Classification of Structures in the Lau Back‐Arc Basin
Shallow Seismicity and the Classification of Structures in the Lau Back‐Arc Basin Open
Back‐arc basins open in response to subduction processes, which cause extension in the upper plate, usually along trench‐parallel spreading axes. However, global seismic databases reveal that the majority of seismic events in the Lau Basin…
View article: The submarine tectono-magmatic framework of Cu-Au endowment in the Tabar-to-Feni island chain, PNG
The submarine tectono-magmatic framework of Cu-Au endowment in the Tabar-to-Feni island chain, PNG Open
Highlights
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\n• Review of the critical processes controlling ore formation in the New Ireland Basin.
\n• Combining geological knowledge of the on- and offshore areas.
\n• New constraints on the origin, timing, and location of pathways fo…
View article: Remote predictive geological mapping as a tool for the reconstruction of the complex geodynamic evolution of Melanesia
Remote predictive geological mapping as a tool for the reconstruction of the complex geodynamic evolution of Melanesia Open
<p>The offshore regions of Eastern Papua New Guinea and the Solomon Islands include several active and remnant arc and backarc systems that formed in response to complex plate tectonic adjustments following subduction initiation in t…
View article: All data files and processing script of "Anhydrite-assisted hydrothermal metal transport to the ocean floor – insights from thermo-hydro-chemical modeling"
All data files and processing script of "Anhydrite-assisted hydrothermal metal transport to the ocean floor – insights from thermo-hydro-chemical modeling" Open
DataThis directory contains all the data of simulation results, which are stored in hdf5 (XDMF) format. One can visualize the results in ParaView.Figures.ipynbThis is a Jupyter-notebook file which contains all the python scripts to generat…
View article: All data files and processing script of "Anhydrite-assisted hydrothermal metal transport to the ocean floor – insights from thermo-hydro-chemical modeling"
All data files and processing script of "Anhydrite-assisted hydrothermal metal transport to the ocean floor – insights from thermo-hydro-chemical modeling" Open
Data files and processing script.DataThis directory contains all the data of simulation results, which are stored in hdf5 (XDMF) format. One can visualize the results in ParaView.Figures.ipynbThis is a Jupyter-notebook file which contains …
View article: ESA’s Lidar Missions Aeolus and EarthCARE
ESA’s Lidar Missions Aeolus and EarthCARE Open
ESAs Earth Explorer Aeolus was launched in August 2018. Aboard the first spaceborne wind lidar ALADIN (Atmospheric LAser Doppler INstrument) was switched on in early September 2018 and demonstrated the capability to provide atmospheric win…