Social 📸 Photography

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Universal HubWho's a good fuzzy-wuzzy raptor? <a href="https://mastodon.online/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> <a href="https://mastodon.online/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a> <a href="https://mastodon.online/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> <a href="https://mastodon.online/tags/birds" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#birds</a> <a href="https://mastodon.online/tags/ospreys" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ospreys</a> <a href="https://www.universalhub.com/2024/whos-good-fuzzy-wuzzy-raptor" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.universalhub.com/2024/whos-good-fuzzy-wuzzy-raptor</a>

Chris WhiteA bizarre <a href="https://sciencemastodon.com/tags/sedimentary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sedimentary</a> feature Some layers in the <a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a> <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> <a href="https://sciencemastodon.com/tags/Conglomerate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Conglomerate</a> have been rolled up like a pie crust, into a tube. If this were a <a href="https://sciencemastodon.com/tags/tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tillite</a>, as it once was thought to be, then it could have been caused by the drag of a <a href="https://sciencemastodon.com/tags/Gaskiers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaskiers</a> <a href="https://sciencemastodon.com/tags/glacier" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacier</a> 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 <a href="https://sciencemastodon.com/tags/UMassBoston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UMassBoston</a>.

Chris WhiteA small <a href="https://sciencemastodon.com/tags/outcrop" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#outcrop</a> of the <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> <a href="https://sciencemastodon.com/tags/Conglomerate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Conglomerate</a>These <a href="https://sciencemastodon.com/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a> are in the <a href="https://sciencemastodon.com/tags/BostonBay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BostonBay</a> Group, which is currently dated to <a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a>. The Squantum Member was interpreted as a <a href="https://sciencemastodon.com/tags/tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tillite</a>, possibly associated with the <a href="https://sciencemastodon.com/tags/Gaskiers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaskiers</a> <a href="https://sciencemastodon.com/tags/glaciation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glaciation</a>, although there a scant signs like scratched pebbles or faceted cobbles. It is currently commonly interpreted as a <a href="https://sciencemastodon.com/tags/debrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#debrite</a> (debris flow). Details in captions. <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sciencemastodon.com/tags/glacier" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacier</a> <a href="https://sciencemastodon.com/tags/turbidite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#turbidite</a> <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a> <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a>

Chris WhiteView about eastward over <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a> Bay, <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> on the left, just south of <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a>, <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> USA <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a> <a href="https://sciencemastodon.com/tags/Fujifilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fujifilm</a> my <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> <a href="https://sciencemastodon.com/tags/landscape" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#landscape</a> 18/2 @ 5.6 1/950 s ISO 200 X-H1

Chris WhiteAnomalous pebble in layered <a href="https://sciencemastodon.com/tags/sedimentary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sedimentary</a> <a href="https://sciencemastodon.com/tags/rock" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rock</a>An angular pebble is conformably surrounded by argillaceous and sandy layers in this <a href="https://sciencemastodon.com/tags/photograph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photograph</a> of the <a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a> <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> Conglomerate. The wide range of clast sizes led to an interpretation as a <a href="https://sciencemastodon.com/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> <a href="https://sciencemastodon.com/tags/tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tillite</a> thru the 1970s, but the Squantum Member is now mostly interpreted as a <a href="https://sciencemastodon.com/tags/debrisFlow" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#debrisFlow</a> (<a href="https://sciencemastodon.com/tags/debrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#debrite</a> or <a href="https://sciencemastodon.com/tags/turbidite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#turbidite</a>). My <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a>.<a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> <a href="https://sciencemastodon.com/tags/fieldTrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fieldTrip</a> <a href="https://sciencemastodon.com/tags/UMassBoston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UMassBoston</a>

Chris WhiteDeformed bedding in meta#sedimentary <a href="https://sciencemastodon.com/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a>The horizontal bedding of the <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> Conglomerate (<a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a>, <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> Bay Group) has been disturbed locally. In the <a href="https://sciencemastodon.com/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> <a href="https://sciencemastodon.com/tags/tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tillite</a> interpretation of the Squantum (favored through at least the 1970s), the distortion might be caused by glaciotectonic drag at the ice base. The current interpretation as a <a href="https://sciencemastodon.com/tags/debrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#debrite</a> or <a href="https://sciencemastodon.com/tags/turbidite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#turbidite</a> would probably attribute the deformations to synsedimentary slumping. My <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a>. <a href="https://sciencemastodon.com/tags/fieldTrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fieldTrip</a>

Chris WhiteRapid changes in <a href="https://sciencemastodon.com/tags/clast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#clast</a> size in <a href="https://sciencemastodon.com/tags/sedimentary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sedimentary</a> <a href="https://sciencemastodon.com/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a>The <a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a> <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> Conglomerate (<a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> Bay Group) transitions from sandstone, to almost-clast-supported conglomerate, to laminated argillite…in about 25 cm. Fifty years ago, it was interpreted as a <a href="https://sciencemastodon.com/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> deposit and called the Squantum <a href="https://sciencemastodon.com/tags/Tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Tillite</a>, presumably associated with the <a href="https://sciencemastodon.com/tags/Gaskiers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaskiers</a> Glaciation. Paucity of evidence (e.g., few scratches or faceted clasts) suggests a debris flow. My <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a>.

Chris WhiteThe <a href="https://sciencemastodon.com/tags/glacier" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacier</a> went that-a-wayThe <a href="https://sciencemastodon.com/tags/striations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#striations</a> on this face of the <a href="https://sciencemastodon.com/tags/Ediacaran" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Ediacaran</a> (ca. 560 Ma) <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> <a href="https://sciencemastodon.com/tags/Conglomerate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Conglomerate</a> were probably left by the <a href="https://sciencemastodon.com/tags/Pleistocene" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pleistocene</a> <a href="https://sciencemastodon.com/tags/Laurentide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Laurentide</a> ice sheet, which retreated ca. 12 ka. The striations have the right orientation, from northwest to southeast. The Squantum Member was once interpreted as a (<a href="https://sciencemastodon.com/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a>) <a href="https://sciencemastodon.com/tags/tillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tillite</a>. The most common contemporary model is a peri-<a href="https://sciencemastodon.com/tags/Gondwana" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gondwana</a> <a href="https://sciencemastodon.com/tags/debrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#debrite</a> (<a href="https://sciencemastodon.com/tags/turbidite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#turbidite</a>). My <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a>. <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a> <a href="https://sciencemastodon.com/tags/fieldTrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fieldTrip</a>

Chris WhiteInterbedded argillaceous & tuffaceous <a href="https://sciencemastodon.com/tags/sediments" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sediments</a> These photos are of <a href="https://sciencemastodon.com/tags/Cambridge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cambridge</a> <a href="https://sciencemastodon.com/tags/Argillite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Argillite</a>, exposed above the <a href="https://sciencemastodon.com/tags/Squantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Squantum</a> Member of the <a href="https://sciencemastodon.com/tags/Roxbury" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Roxbury</a> Conglomerate (<a href="https://sciencemastodon.com/tags/Neoproterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Neoproterozoic</a>). Prior to the 1970s or so, the Squantum Member was interpreted as <a href="https://sciencemastodon.com/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> sediments; it's now broadly interpreted as debris flows, with the Cambridge being distal turbidites overlying it. I lead a field trip here for <a href="https://sciencemastodon.com/tags/UMassBoston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UMassBoston</a>. See captions.<a href="https://sciencemastodon.com/tags/outcrop" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#outcrop</a> <a href="https://sciencemastodon.com/tags/fieldTrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fieldTrip</a> <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> <a href="https://sciencemastodon.com/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a> <a href="https://sciencemastodon.com/tags/tuff" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tuff</a> <a href="https://sciencemastodon.com/tags/Fufjilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fufjilm</a> <a href="https://sciencemastodon.com/tags/Venus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Venus</a> 65mm <a href="https://sciencemastodon.com/tags/macro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#macro</a> <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a>

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