home.social

#conglomerate — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #conglomerate, aggregated by home.social.

  1. A bizarre #sedimentary feature

    Some layers in the #Neoproterozoic #Squantum Member of the #Roxbury #Conglomerate have been rolled up like a pie crust, into a tube. If this were a #tillite, as it once was thought to be, then it could have been caused by the drag of a #Gaskiers #glacier over the till. These rocks are mostly interpreted as deposited by submarine debris flows these days, in which case they could’ve been deformed during a slump and flow. Site of a field trip for #UMassBoston.

  2. A small #outcrop of the #Squantum Member of the #Roxbury #Conglomerate

    These #rocks are in the #BostonBay Group, which is currently dated to #Neoproterozoic. The Squantum Member was interpreted as a #tillite, possibly associated with the #Gaskiers #glaciation, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a #debrite (debris flow). Details in captions.
    #geology #glacier #turbidite #Quincy #Boston #Massachusetts #NewEngland

  3. A small #outcrop of the #Squantum Member of the #Roxbury #Conglomerate

    These #rocks are in the #BostonBay Group, which is currently dated to #Neoproterozoic. The Squantum Member was interpreted as a #tillite, possibly associated with the #Gaskiers #glaciation, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a #debrite (debris flow). Details in captions.
    #geology #glacier #turbidite #Quincy #Boston #Massachusetts #NewEngland

  4. A small #outcrop of the #Squantum Member of the #Roxbury #Conglomerate

    These #rocks are in the #BostonBay Group, which is currently dated to #Neoproterozoic. The Squantum Member was interpreted as a #tillite, possibly associated with the #Gaskiers #glaciation, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a #debrite (debris flow). Details in captions.
    #geology #glacier #turbidite #Quincy #Boston #Massachusetts #NewEngland

  5. A small #outcrop of the #Squantum Member of the #Roxbury #Conglomerate

    These #rocks are in the #BostonBay Group, which is currently dated to #Neoproterozoic. The Squantum Member was interpreted as a #tillite, possibly associated with the #Gaskiers #glaciation, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a #debrite (debris flow). Details in captions.
    #geology #glacier #turbidite #Quincy #Boston #Massachusetts #NewEngland

  6. A small #outcrop of the #Squantum Member of the #Roxbury #Conglomerate

    These #rocks are in the #BostonBay Group, which is currently dated to #Neoproterozoic. The Squantum Member was interpreted as a #tillite, possibly associated with the #Gaskiers #glaciation, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a #debrite (debris flow). Details in captions.
    #geology #glacier #turbidite #Quincy #Boston #Massachusetts #NewEngland