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the claim

Cross-stratified conglomerates form within fan delta sedimentary deposits

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 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 Cross-stratified conglomerates form within fan delta sedimentary deposits?

Yes. Geological studies across multiple basins and epochs consistently document the presence of cross-stratified, parallel-stratified, and otherwise internally stratified conglomerates within fan delta sedimentary deposits.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked

The analysis

The claim specifies that cross-stratified conglomerates form within fan delta sedimentary deposits. This is a specific, empirical geological statement that is easily verified through sedimentological literature. Multiple papers (e.g., [0], [2], [5], [11]) explicitly identify stratified or cross-stratified conglomerate facies within various fan delta formations worldwide. There are no refuting papers; therefore, the balance of evidence clearly supports the claim.

Evidence for · 6
The Deposits, Internal Structure and Geometry in Six Alluvial Fan-Fan Delta Bodies (Devonian-Norway)—A Study in the Significance of Bedding Sequence in Conglomerates
1981
Documents conglomerates with internal stratification and sorting within alluvial fan-fan delta bodies.
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Gloppen, T. G. & Steel, R. J. (1981). The Deposits, Internal Structure and Geometry in Six Alluvial Fan-Fan Delta Bodies (Devonian-Norway)—A Study in the Significance of Bedding Sequence in Conglomerates. doi.org. https://doi.org/10.2110/pec.81.31.0049

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More for · 5
Genetic mechanism of high-quality reservoirs in Permian tight fan delta conglomerates at the northwestern margin of the Junggar Basin, northwestern China
2017
Discusses fan delta conglomerate reservoirs where sedimentary features and facies are analyzed in detail.
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Yuan, G., Cao, Y., Qiu, L., & Chen, Z. (2017). Genetic mechanism of high-quality reservoirs in Permian tight fan delta conglomerates at the northwestern margin of the Junggar Basin, northwestern China. doi.org. https://doi.org/10.1306/02071715214

Sedimentology and tectonic implications of Cretaceous fan‐delta conglomerates, Queen Charlotte Islands, Canada
1990
Recognizes parallel-stratified and graded conglomerate facies within a gravelly fan-delta depositional environment.
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HIGGS, R. (1990). Sedimentology and tectonic implications of Cretaceous fan‐delta conglomerates, Queen Charlotte Islands, Canada. doi.org. https://doi.org/10.1111/j.1365-3091.1990.tb01984.x

The Orustdalen Formation of Brøggerhalvøya, Svalbard: A fan delta complex of Dinantian/Namurian age
1982
Describes fluvial channel and reworked facies consisting of interbedded conglomerates and cross-stratified sandstones in a fan delta complex.
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Fairchild, I. (1982). The Orustdalen Formation of Brøggerhalvøya, Svalbard: A fan delta complex of Dinantian/Namurian age. doi.org. https://doi.org/10.1111/J.1751-8369.1982.TB00470.X

Miocene fan delta conglomerates in the north-western part of the Danube Basin: provenance, paleoenvironment, paleotransport and depositional mechanisms
2018
Examines Miocene fan delta conglomerates displaying transitions from clast- to matrix-supported structures and distinct transport mechanisms.
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Csibri, T., Rybár, S., Šarinová, K., Jamrich, M., Sliva, Ľ., & Kováč, M. (2018). Miocene fan delta conglomerates in the north-western part of the Danube Basin: provenance, paleoenvironment, paleotransport and depositional mechanisms. doi.org. https://doi.org/10.1515/geoca-2018-0027

Facies variations in gravelly cyclic steps deposited from turbidity currents: Miocene fan delta front deposits compared with a modern active fan delta, central Japan
2024
Analyzes sedimentary facies of Miocene fan delta front deposits containing parallel-stratified and backset-stratified conglomerates.
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Nakajima, T. & Saito, Y. (2024). Facies variations in gravelly cyclic steps deposited from turbidity currents: Miocene fan delta front deposits compared with a modern active fan delta, central Japan. doi.org. https://doi.org/10.1002/dep2.315

What does the evidence say?

The claim specifies that cross-stratified conglomerates form within fan delta sedimentary deposits. This is a specific, empirical geological statement that is easily verified through sedimentological literature. Multiple papers (e.g., [0], [2], [5], [11]) explicitly identify stratified or cross-stratified conglomerate facies within various fan delta formations worldwide. There are no refuting papers; therefore, the balance of evidence clearly supports the claim.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8604 Aug 2026
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