Article
Geosciences, Multidisciplinary
E. A. Pilles, G. R. Osinski, R. A. F. Grieve
Summary: This article discusses the geological, geochemical, and mineralogical characteristics of the Offset Dykes in the Sudbury impact structure, as well as their injection, crystallization, and differentiation history. The Offset Dykes are mainly composed of quartz diorite and exhibit variations in mineral composition. The Pele dyke stands out with its distinct features compared to other dykes in the area.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Carol-Anne Genereux, Douglas K. Tinkham, Bruno Lafrance
Summary: The breccias at Crean Hill may have formed by shock melting during impact, and were subsequently modified by contact metamorphism during cooling of the SIC, and by later syntectonic regional metamorphism.
PRECAMBRIAN RESEARCH
(2021)
Article
Geology
Lucie Mathieu, Ulrich Riller, Lisa Gibson, Peter Lightfoot
Summary: The study focuses on the field relationships between the Copper Cliff Embayment (CCE) and Offset (CCO) dykes in the Sudbury Igneous Complex, shedding light on the mode of melt emplacement and the role of pre-impact faults in deformation. The research suggests that the CCO dyke formed before the CCE and Sublayer were fully evolved, indicating a complex sequence of events in the formation of these geological features. Additionally, the study highlights the importance of structural analysis and 3D modeling in refining slip estimates along major faults and understanding the migration of melts within the dykes.
ORE GEOLOGY REVIEWS
(2021)
Article
Geology
S. Yu Chistyakova, R. M. Latypov
Summary: The magmatic stratigraphy of the Sudbury Igneous Complex in Canada is believed to have formed through differentiation of an initial impact melt sheet. However, a large pothole-like depression has been discovered in the chamber floor, suggesting that the roof sequence collapsed onto the floor sequence during the crystallization process.
Article
Environmental Sciences
Edward J. Kellaway, M. Catherine Eimers, Shaun A. Watmough
Summary: This study reveals that the legacy effects of soil liming can last for several decades, with the most significant impact seen in the forest floor (FH), although the effects are relatively modest, and a considerable amount of limestone may have been lost due to erosion.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Birendra Sapkota, Brent Verbuyst, Jeff Bain, Carol Ptacek, David Blowes, Tom Al
Summary: In mine tailings, the precipitation of secondary minerals can lead to the formation of cemented crusts or hardpans. A study investigated the formation of cemented crusts in the sand cover above the tailings at the former Long Lake Gold Mine. The upward transport of sulfide-mineral oxidation products was observed, resulting in elevated concentrations of arsenic, iron, and sulfur in the sand cover.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Victor V. Golovko, Oleg Kamaev, Jiansheng Sun, Chris J. Jillings, Pierre Gorel, Eric Vazquez-Jauregui
Summary: This paper describes a system and experimental procedure using integrating passive detectors, such as TLDs, to measure ultra-low-level ambient dose equivalent rate values at the SNOLAB facility in Canada. The long exposure time of these detectors allows for better sensitivity in measuring ultra-low activity levels. The study concludes that TLDs provide reliable results in measuring the ultra-low-level environmental radiation background.
Article
Geochemistry & Geophysics
Yevgeniy P. P. Gurov, Vitaliy V. V. Permiakov
Summary: Metallic microspheres have been discovered in rocks from the Onaping Formation of the Sudbury impact structure in Canada. These microspherules are mainly found in contact breccias, with only a few in the upper sequences. They have a spherical shape, ranging in size from 5 to 30 & mu;m, and contain refractory elements like Cr, Co, Fe, Mo, W, and Ti, with predominant Ni content of 40-75 wt%. The formation of these microspheres is believed to be a result of condensation in a high-temperature plume and fractional condensation during the expansion and cooling of the impact vapor plume.
METEORITICS & PLANETARY SCIENCE
(2023)
Article
Engineering, Civil
Li-zhi Xu, Wen-ke Ren, Xiao-dong Wang, Jiang-bo Wang, Zhong-hua Du, Guang-fa Gao
Summary: PELE projectile has strong destructive power, which can blast a large opening in concrete target. The analytical model can accurately predict the opening diameter of concrete target and shows good correlation with experimental results. Jacket strength, impact velocity, and target thickness are important factors influencing the opening diameter.
THIN-WALLED STRUCTURES
(2021)
Article
Geochemistry & Geophysics
David J. Good, Pete Hollings, Greg Dunning, Rachel Epstein, John McBride, Andrew Jedemann, Seamus Magnus, Trevor Bohay, Geoff Shore
Summary: The study reveals the presence of an unusual and long-lived mantle source in the NE MCR, with U-Pb ages determining the formation times of mineralized rocks. Different series of mafic rocks exhibit distinct geochemical properties, indicating the potential for Cu-PGE mineralization in a larger area than previously recognized.
JOURNAL OF PETROLOGY
(2021)
Article
Geochemistry & Geophysics
Daniele Thallner, Andrew J. Biggin, Henry C. Halls
Summary: Long-term variations of the geomagnetic field, particularly during the Ediacaran period, provide insights into the evolution of Earth's deep interior. Palaeointensity data from the Grenville Dykes suggest the presence of an equatorial dipole in the geomagnetic field around 585 Ma.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Jeremie D. Pfister, Daniel J. Kontak, Jeffrey H. Marsh
Summary: The origin of pegmatites has long been debated, with two main theories proposed: protracted fractionation of a felsic magma and anatexis of an appropriate protolith. This study employed U-Pb analyses to examine 32 well characterized pegmatites and found evidence for three distinct pegmatite-forming events over a span of 800 Ma. Field observations and geochemical data suggest that two older events are related to regional magmatism, while the younger event is associated with partial melting of an appropriate protolith. The findings support the coexistence of different models for pegmatite genesis.
PRECAMBRIAN RESEARCH
(2023)
Article
Multidisciplinary Sciences
C. Ronnie Drever, Susan C. Cook-Patton, Fardausi Akhter, Pascal H. Badiou, Gail L. Chmura, Scott J. Davidson, Raymond L. Desjardins, Andrew Dyk, Joseph E. Fargione, Max Fellows, Ben Filewod, Margot Hessing-Lewis, Susantha Jayasundara, William S. Keeton, Timm Kroeger, Tyler J. Lark, Edward Le, Sara M. Leavitt, Marie-Eve Leclerc, Tony C. Lempriere, Juha Metsaranta, Brian McConkey, Eric Neilson, Guillaume Peterson St-Laurent, Danijela Puric-Mladenovic, Sebastien Rodrigue, Raju Y. Soolanayakanahally, Seth A. Spawn, Maria Strack, Carolyn Smyth, Naresh Thevathasan, Mihai Voicu, Christopher A. Williams, Peter B. Woodbury, Devon E. Worth, Zhen Xu, Samantha Yeo, Werner A. Kurz
Summary: Natural climate solutions (NCS) offer readily deployable options that can contribute to Canada's emission reduction goals alongside steep reductions in fossil fuel emissions. These solutions have the potential to provide significant mitigation opportunities and co-benefits, representing an important contribution to Canada's climate goals under the Paris Agreement.
Article
Multidisciplinary Sciences
Lucie Mathieu, Ulrich Riller, Lisa Gibson, Peter Lightfoot
Summary: This contribution provides maps and structural measurements of the Copper Cliff Embayment (CCE) and Offset (CCO) dyke, aiming to understand the mode of melt emplacement and the role of pre-impact faults in the deformation of the southern part of the Sudbury Igneous Complex. Researchers and exploration geologists can utilize this data for future mapping and exploration efforts in the Copper Cliff area.
Article
Geochemistry & Geophysics
Yujian Wang, C. Michael Lesher, Peter C. Lightfoot, Edward F. Pattison, J. Paul Golightly
Summary: The Ni-Cu-platinum group element (PGE) sulfide mineralization in the Sudbury impact structure occurs in two environments, the basal contact and the diorite phase of offset dikes. The mineralization is influenced by factors such as inclusion populations, rock melting states, and stages of dike formation.
Article
Geosciences, Multidisciplinary
Felix M. Schulte, Axel Wittmann, Stefan Jung, Joanna V. Morgan, Sean P. S. Gulick, David A. Kring, Richard A. F. Grieve, Gordon R. Osinski, Ulrich Riller
Summary: Core samples from IODP/ICDP Expedition 364 provide unprecedented evidence for the physical processes during the interaction of impact melt with rock-debris-laden seawater. The study suggests that violent contact between superheated silicate impact melt and water-rock debris mixture under hydrothermal conditions triggered instabilities leading to brecciation. Understanding these processes is crucial for comprehending the consequences of large meteorite impact events.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Zachary R. Morse, Gordon R. Osinski, Livio L. Tornabene, Catherine D. Neish
Summary: High-resolution images and elevation data from the Lunar Reconnaissance Orbiter, along with spectral data from the Clementine mission, are used to identify and map the well-preserved Late Imbrian Tsiolkovskiy crater on the far side of the Moon in detail. Analysis shows an asymmetrical distribution of the ejecta blanket and consistent overprinting of ballistic ejecta by impact melt-bearing material. The study suggests two separate ejecta emplacement events occurred, with a phase of ballistic ejecta emplacement followed by a phase of melt-bearing ejecta emplacement during and after crater formation.
METEORITICS & PLANETARY SCIENCE
(2021)
Article
Astronomy & Astrophysics
Arya Bina, Gordon R. Osinski
Summary: The majority of Mars' surface is frozen, showing landforms consistent with periglacial activity such as the recently discovered "Decameter-scale Rimmed Depressions". These features suggest the presence of subsurface ice on Mars, likely formed through similar processes to brain terrain.
PLANETARY AND SPACE SCIENCE
(2021)
Article
Astronomy & Astrophysics
C. D. Neish, K. M. Cannon, L. L. Tornabene, R. L. Flemming, M. Zanetti, E. Pilles
Summary: Researchers investigated impact melt deposits from seven lunar craters and found that their unique surface texture might be caused by a mixture of pyroxene and/or glassy material.
Article
Geochemistry & Geophysics
S. L. Simpson, F. J. Longstaffe, G. R. Osinski, C. M. Caudill, D. A. Kring
Summary: The study conducted detailed analysis of clay minerals from the peak-ring structure formed 66 million years ago, revealing the dominance of smectitic clay minerals, with composition varying based on stratigraphic position. Isotope analyses showed that the clay minerals formed at low temperatures, possibly below current ambient conditions, and suggest a possible source of ancient fluids from meteoric water-dominated Gulf Coast brines or long-distance transport of groundwater from highlands to the east.
Article
Astronomy & Astrophysics
A. L. Gonzalez-Flores, J. Jin, G. R. Osinski, C. J. Tsujita
Summary: This study provides strong morphological evidence for the presence of protists in the late Paleoproterozoic using an extended-focal-depth imaging technique and scanning electron microscopy.
Article
Geochemistry & Geophysics
G. D. Tolometti, T. M. Erickson, G. R. Osinski, C. Cayron, C. D. Neish
Summary: This study analyzes four different samples from the Mistastin impact structure in Canada, revealing heterogeneity of superheated conditions in impact structures.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Astronomy & Astrophysics
Leah E. Sacks, Livio L. Tornabene, Gordon R. Osinski, Racel Sopoco
Summary: Impact craters and their ejecta deposits provide insights into the structure and composition of planetary crusts. The Hargraves Crater on Mars exhibits a unique balance of exposure and preservation in its ejecta deposits. The crater has two distinct ejecta units, with the lower unit interpreted as lithic impact breccia and the overlying unit as impact melt-bearing breccia or impact melt rock unit. The sharp contact between these two units is similar to observations of ejecta deposits on Earth. Study of Hargraves-type ejecta will improve our understanding of ejecta and ejecta emplacement processes.
Article
Astronomy & Astrophysics
Emily R. Bamber, Timothy A. Goudge, Caleb Fassett, Gordon R. Osinski
Summary: The study investigates the mechanisms for the formation of inlets in impact crater lakes on Mars. The authors find that rim erosion and depositional rim burial played an important role in connecting exterior fluvial systems with crater interiors. They also observe that isolated fluvial valleys breached craters in different degradation states compared to valley network-fed craters, suggesting comparable fluvial erosion occurred during later periods of Mars' history.
Article
Geochemistry & Geophysics
G. D. Tolometti, C. D. Neish, C. W. Hamilton, G. R. Osinski, A. Kukko, J. R. C. Voigt
Summary: Distinguishing between lava types and facies using remote sensing data is important for interpreting the emplacement history of lava flow-fields. This study analyzed radar and LiDAR data to identify the characteristics of lava facies and types. The results showed that while the facies and some lava types can be statistically separated, the high overlap rates prevent direct mapping.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Emily R. Bamber, T. A. Goudge, C. Fassett, G. R. Osinski, G. Stucky de Quay
Summary: This study examines the factors that influence the formation of inlet valleys in degraded Martian craters. The researchers found that hydrologic factors related to basin hydrology play a more significant role than topographic factors in determining whether a crater possesses an inlet or not.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
Nicolas D. D. Garroni, Gordon R. R. Osinski
Summary: Carbonates from the impact melt-bearing breccia in the 2016 IODP/ICDP Expedition 364 drill core at Site M0077 were systematically documented and characterized petrographically and geochemically. The different types of calcite present showed variations in elemental impurities, indicating different processes and hydrothermal activities.
METEORITICS & PLANETARY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Gordon R. Osinski, Adam B. Coulter, Roberta L. Flemming, Alexandra Ozaruk, Annemarie E. Pickersgill, Alaura C. Singleton
Summary: The Gow Lake impact structure in northern Saskatchewan, Canada, formed approximately 197 million years ago and has not been studied in detail since its discovery in the 1970s. A 2011 expedition and subsequent laboratory studies have revealed new information about this poorly studied impact structure, showing that it is a transitional impact structure, one of only two identified on Earth.
METEORITICS & PLANETARY SCIENCE
(2023)
Proceedings Paper
Engineering, Aerospace
Eric A. Pilles, Gordon R. Osinski, Livio L. Tornabene, Jayshri Sabarinathan, Aref Bakhtazad
Summary: The Integrated Vision System (IVS) is a prototype stand-off instrument mounted on a rover mast for planetary exploration, currently being redesigned to include a wide band multispectral camera and multi-wavelength LIDAR for rapid reconnaissance of the lunar surface. The IVS is able to differentiate between different lunar materials and address strategic knowledge gaps related to lunar resource exploration.
EARTH AND SPACE 2021: SPACE EXPLORATION, UTILIZATION, ENGINEERING, AND CONSTRUCTION IN EXTREME ENVIRONMENTS
(2021)
Article
Astronomy & Astrophysics
Zachary R. Morse, Gordon R. Osinski, Livio L. Tornabene, Matthew Bourassa, Michael Zanetti, Patrick J. A. Hill, Eric Pilles, Matthew Cross, Derek King, Gavin Tolometti
Summary: The Schrödinger basin, located near the lunar south pole, has been identified as a high-priority landing site for future lunar exploration missions. This impact structure hosts an uplifted peak ring and well-preserved mare and pyroclastic deposits, providing valuable insights into lunar volcanic processes. High-resolution mapping using data from various missions has been used to plan rover traverse paths for sample collection, aiming to enhance our understanding of lunar chronology, volcanism, and impact cratering processes.
PLANETARY SCIENCE JOURNAL
(2021)
