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State Routes 9 and 372 interchange, Berlin, Hartford Co., Connecticut, USAi
Regional Level Types
State Routes 9 and 372 interchange- not defined -
Berlin- not defined -
Hartford Co.County
ConnecticutState
USACountry

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Latitude & Longitude (WGS84): 41° 37' 26'' North , 72° 44' 12'' West
Latitude & Longitude (decimal): 41.62389,-72.73667
GeoHash:G#: drkkbc6u8
Köppen climate type:Dfa : Hot-summer humid continental climate


Road cuts for this interchange, located just east of State Route 15, exposed Jurassic East Berlin Formations sedimentary rocks and basaltic rocks Hampden Formation. Vesicles in the basalts contain calcite, prehnite and zeolites. The East Berlin formation, which contains several lakebed sequences, including fossiliferous and petroleum rich black shales, is named for the village just to the east. Dinosaur footprints are common in the mudstones and sandstones.

Regions containing this locality

North America Plate

Plate - 4,950 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Habit: botryoidal aggregates
Colour: white
Fluorescence: yellow-white
Reference: Former Don Miller collection
Dolomite
Formula: CaMg(CO3)2
Habit: rhombohedral
Colour: tan
Description: Specimens from a 2-cm-thick vein of dolomite with small vugs lined with crystals and partly filled with fluorite.
Reference: Former Ed Force collection
Fluorite
Formula: CaF2
Habit: cubic
Colour: aqua and purple
Fluorescence: violet
Description: Partly filling small vugs in a 2-cm-thick vein of dolomite.
Reference: Former Ed Force collection
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Harold Moritz collection

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
Group 9 - Silicates
'Prehnite'9.DP.20Ca2Al2Si3O10(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2

List of minerals for each chemical element

HHydrogen
H PrehniteCa2Al2Si3O10(OH)2
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O CalciteCaCO3
O DolomiteCaMg(CO3)2
O PrehniteCa2Al2Si3O10(OH)2
FFluorine
F FluoriteCaF2
MgMagnesium
Mg DolomiteCaMg(CO3)2
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Si PrehniteCa2Al2Si3O10(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ca PrehniteCa2Al2Si3O10(OH)2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Early Jurassic
174.1 - 201.3 Ma



ID: 2790639
Hampden Basalt

Age: Early Jurassic (174.1 - 201.3 Ma)

Stratigraphic Name: Hampden Basalt

Description: Greenish-gray to black (weathers bright orange to brown), fine- to medium-grained, grading from basalt near contacts to fine-grained gabbro in the interior, composed of pyroxene and plagioclase with accessory opaques and locally olivine or devitrified glass.

Comments: Part of Central Lowlands; Newark Terrane - Hartford and Pomperaug Mesozoic Basins. Part of Newark Supergroup (Upper Triassic and Lower Jurassic). Part of Meriden Formation of Krynine (1950) (Lower Jurassic); CT005. Original map source: Connecticut Geological and Natural History Survey, DEP, in cooperation with the U.S. Geological Survey, 2000, Bedrock Geology of Connecticut, shapefile, scale 1:50,000

Lithology: Major:{basalt,gabbro}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Triassic
201.3 - 251.902 Ma



ID: 3188891
Mesozoic volcanic and intrusive rocks

Age: Triassic (201.3 - 251.902 Ma)

Comments: Connecticut Valley Basin

Lithology: Mafic volcanic rocks; conglomerate,arkose,shale,arenite

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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