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the claim

Explosion craters can be distinguished from impact craters by shock metamorphic features.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that explosion craters can be distinguished from impact craters by shock metamorphic features?

Yes. Shock metamorphic features such as planar deformation features, high-pressure mineral phases, and shatter cones are key diagnostic tools used by geologists to reliably distinguish hypervelocity meteorite impact craters from terrestrial explosion craters.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The retrieved literature consistently supports the premise that shock metamorphic features (such as shatter cones, planar deformation features, and high-pressure mineral phases) are definitive criteria for identifying impact structures and separating them from conventional explosion craters. Multiple papers confirm that these extreme high-pressure, ultra-high strain rate signatures are unique to cosmic impact events.

Evidence for · 4
Shock metamorphic features in mafic and ultramafic inclusions in the Sudbury Igneous Complex: Implications for their origin and impact excavation
2018
Sudbury Igneous Complex research highlights shock metamorphic features like mosaicism and fracturing as indicators of impact excavation.
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Wang, Y., Lesher, C., Lightfoot, P., Pattison, E. F., & Golightly, J. (2018). Shock metamorphic features in mafic and ultramafic inclusions in the Sudbury Igneous Complex: Implications for their origin and impact excavation. doi.org. https://doi.org/10.1130/G39913.1

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More for · 3
A Study of Shock-Metamorphic Features of Feldspars from the Xiuyan Impact Crater
2020
Xiuyan Impact Crater study utilizes shock-metamorphic features in feldspar to identify and characterize impact structures.
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Yin, F. & Dai, D. (2020). A Study of Shock-Metamorphic Features of Feldspars from the Xiuyan Impact Crater. doi.org. https://doi.org/10.3390/min10030231

Shatter cones: (Mis)understood?
2016
Shatter cones are identified as distinctive striated conical fractures serving as unequivocal evidence of meteorite impact events.
Get citation
GR, O. & L, F. (2016). Shatter cones: (Mis)understood?. doi.org. https://doi.org/10.1126/sciadv.1600616

Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico.
2021
Santa Fe impact structure documentation relies on large shatter cones to evidence shock exposure distinct from surface explosions.
Get citation
G, K., R, K., & H, U. (2021). Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico.. doi.org. https://doi.org/10.1038/s41598-021-01451-8

What does the evidence say?

The retrieved literature consistently supports the premise that shock metamorphic features (such as shatter cones, planar deformation features, and high-pressure mineral phases) are definitive criteria for identifying impact structures and separating them from conventional explosion craters. Multiple papers confirm that these extreme high-pressure, ultra-high strain rate signatures are unique to cosmic impact events.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8104 Aug 2026
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