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  2. Red beds - Wikipedia

    en.wikipedia.org/wiki/Red_beds

    Red beds may form during diagenesis.The key to this mechanism is the intrastratal alteration of ferromagnesian silicates by oxygenated groundwaters during burial. Walker's studies show that the hydrolysis of hornblende and other iron-bearing detritus follows Goldich dissolution series.

  3. Carbonate-hosted lead-zinc ore deposits - Wikipedia

    en.wikipedia.org/wiki/Carbonate-hosted_lead-zinc...

    World-wide distribution of MVT deposits (red), clastic sediment-hosted (green), and unclassified (blue) lead-zinc deposits. Source: USGS. Carbonate-hosted lead-zinc ore deposits are important and highly valuable concentrations of lead and zinc sulfide ores hosted within carbonate (limestone, marl, dolomite) formations and which share a common genetic origin.

  4. Bloomsburg Formation - Wikipedia

    en.wikipedia.org/wiki/Bloomsburg_Formation

    The Silurian Bloomsburg Formation is a mapped bedrock unit in Pennsylvania, New Jersey, New York and Maryland. It is named for the town of Bloomsburg, Pennsylvania , in which it was first described. The Bloomsburg marked the first occurrence of red sedimentary rocks in the Appalachian Basin .

  5. Bed (geology) - Wikipedia

    en.wikipedia.org/wiki/Bed_(geology)

    A bedding surface is three-dimensional surface, planar or curved, that visibly separates each successive bed (of the same or different lithology) from the preceding or following bed. Where bedding surfaces occur as cross-sections, e.g., in a 2-dimensional vertical cliff face of horizontal strata, are often referred to as bedding contacts .

  6. Gulf of Mexico basin - Wikipedia

    en.wikipedia.org/wiki/Gulf_of_Mexico_basin

    Red beds, also referred to as non-marine clastic sequences, which are often red in color, have been found in wells drilled in the Gulf of Mexico which penetrated the Late-Triassic and Early-Jurassic strata, filling the extensional graben features. The Gulf of Mexico basin red beds are specifically named the Eagle Mills formation, located ...

  7. Red Beds of Texas and Oklahoma - Wikipedia

    en.wikipedia.org/wiki/Red_Beds_of_Texas_and_Oklahoma

    The most prolific fossil site in the red beds is the Geraldine Bonebed within the Nocona Formation of the Wichita Group. [6] During the Permian, the bonebed was the site of a freshwater pond. After a catastrophic event this became the burial site for a variety of terrestrial and marine animals. [ 15 ]

  8. Kem Kem Group - Wikipedia

    en.wikipedia.org/wiki/Kem_Kem_Group

    Ornithischians reported from the Continental Red Beds Genus Species Location Stratigraphic position Material Notes Images Ankylosauria [2] [32] Indeterminate Douira Formation An isolated tooth. [2] A probable ankylosaur [32] Ornithopoda [33] Indeterminate Douira Formation A large, clover-shaped, three-toed footprint. [2]

  9. Bedform - Wikipedia

    en.wikipedia.org/wiki/Bedform

    Current ripples preserved in sandstone of the Moenkopi Formation, Capitol Reef National Park, Utah, United States. A bedform is a geological feature that develops at the interface of fluid and a moveable bed, the result of bed material being moved by fluid flow. Examples include ripples and dunes on the bed of a river.