WEST |
MIDWEST |
SOUTH |
NORTHEAST |
AK AZ
CA
CO
HI
ID MT NM
NV
OR
UT
WA
WY |
IA
IL
MI
MN
MO
ND
OH SD |
AR
DC
DE
FL GA
KY MD
MS NC
SC
VA
WV |
CT
MA
ME NH
NJ
NY
RI
VT |
|
|
|
|
IDAHO
- Return to Top |
MICHIGAN
- Return to Top |
DELAWARE
- Return to Top |
NEW JERSEY
- Return to Top |
EMERALD CREEK 46.99N, 116.37W |
MCLAIN STATE PARK, HANCOCK 47.24N, 88.61W |
PRIME HOOK BEACH 38.90N, 75.05W |
LONG BEACH - 39.60N, 74.21W |
MESA
FALLS 44.19N, 111.33W |
EAGLE
HARBOR, LAKE SUPERIOR 47.44N, 88.23W |
BETHANY BEACH
38.54N, 75.06W |
MAINE
- Return to Top |
WYOMING
- Return to Top |
MINNESOTA
- Return to Top |
CAPE HENLOPEN
38.77N, 75.10W |
DYER POINT, CAPE ELIZABETH 43.56N, 70.20W |
Travertine
Sample Near Yellowstone Nat. Pk. |
-RYSTAL LAKE,
BURNSVILLE 44.72N, 93.27W |
VIRGINIA
- Return to Top |
SAND BEACH ACADIA
NATIONAL PARK 44.33N, 68.14W |
ARIZONA
- Return to Top |
IOWA
- Return to Top |
OLD ARRONS BEACH, DIGGS WHARF 37.37N,
76.34W |
OGUNQUIT 43.24N, 70.60W
|
ARIZONA
METEOR CRATER ROCK FLOUR 35.03N, 111.02W |
BOB KERRY BRIDGE,
COUNCIL BLUFFS 41.30N, 95.90W |
GREAT
FALLS NAT. PARK, GREAT FALLS (4 SAMPLES) 39.00N, 77.29W
|
HARRISON (4
SAMPLES) 44.11N, 70.68W |
MONUMENT VALLEY 36.98N, 110.10W
|
ILLINOIS
- Return to Top |
SCOTT'S RUN NATURE PRESERVE, MCLEAN (2 SAMPLES)
38.96N, 77.20W |
MASSACHUSETTS
- Return to Top |
NORTH ALMA SCHOOL
ROAD @ RT 202 MESA 33.42N, 111.83W |
LOYOLA BEACH, LAKE MICHIGAN,
CHICAGO 42.00N, 87.70W |
POTOMAC
OVERLOOK PARK, DONALDSON RUN 38.91N, 77.11W |
SANDY BEACH, COHASSET - 42.24N,
70.80W |
SCOTTSDALE
33.50N, 111.93W |
WINNETKA 42.11N, 87.74W
|
CUSTIS BIKE TRAIL, ARLINGTON 38.89N, 77.08W |
WORLD'S END,
HINGHAM 42.27N, 70.88W |
VIRGIN RIVER GORGE ≈36.92N,
≈113.85W
|
NORTH DAKOTA
- Return to Top |
POTOMAC WAYSIDE PARK, LOUDOUN HEIGHTS 39.32N, 77.72W
|
SEDGWICK
DRIVE , SCITUATE 42.13N,
70.44W |
KARTCHNER CAVERNS STATE PARK 31.84N, 110.35W |
GRASS LAKE,
HANKINSON 46.07N, 96.90W |
FORT BOYKIN
BEACH, ISLE OF WIGHT 36.89N, 76.70W |
LONG BEACH , PLYMOUTH - 41.96N,
70.67W |
BOOTHILL CEMETERY, TOMBSTONE 31.56N, 110.25W
|
SOUTH DAKOTA
- Return to Top |
ARKANSAS
- Return to Top |
BRANT ROCK, MARSHFIELD - 42.10N, 70.66W |
SAGUARO NATIONAL PARK 32.25N, 110.50W
|
CRANDALL GRAVEL
PIT 43.20N, 97.91W |
COSSATOT RIVER
HEADWATERS, 34.38N, 94.24W |
ROCKY BEACH, COHASSET
(4 SAMPLES) - 42.24N,
70.80W
|
MISSION SAN XAVIER DEL BAC, TUCSON 32.11N, 111.01W
|
CUSTER STATE PARK,
SUNDAY GULCH, SYLVAN LAKE 43.75N, 103.42W |
KENTUCKY
- Return to Top |
LANE BEACH, WEYMOUTH (2 SAMPLES) 42.25N, 70.93W |
MONTANA - Return to Top |
OHIO
- Return to Top |
LITTLE BARREN RIVER, METCALFE COUNTY 37.10N, 85.63W |
DEAD HORSE BEACH, SALEM 42.32N, 70.52W |
CLARK FORK RIVER
48.18N, 116.27W |
MENTOR HEADLANDS,
GRAND RIVER 41.76N, 82.20W |
MISSISSIPPI
- Return to Top |
SALEM WILLOWS
BEACH 42.32N, 70.52W |
QUARTZ FLATS REST AREA 47.08N, 114.76W
|
MISSOURI
- Return to Top |
CANE
CREEK, THAXTON 34.32N, 89.23W |
DEVEREUX BEACH, MARBLEHEAD 42.29N, 70.51W |
GALLATIN RIVER
45.46N, 111.25W |
MISSISSIPPI RIVER, ST. LOUIS 38.64N, 90.21W |
BATESVILLE PIT, MEMPHIS STONE SAND GRAVEL, 34.29N, 89.96W |
WAIKIKI BEACH, WINTER ISLAND, SALEM - 42.31N,
70.52W
|
NEAR LEWIS & CLARK CAVERNS 45.82N, 111.88W
|
|
SOUTH CAROLINA
- Return to Top |
GROUT PILE AT HALIBUT STATE PARK, ROCKPORT- 42.65N,
70.62W |
WASHINGTON
- Return to Top |
|
PAWLEYS ISLAND 33.43N, 79.13W |
HERRING COVE BEACH, PROVINCETOWN 42.05N, 70.18W |
WESTHAVE
STATE PARK, WESTPORT 46.89N, 124.11W |
|
LAKE WYLIE 35.11N, 81.06W |
HORSENECK BEACH, WESTFIELD 41.51N, 71.05W |
NUCOR STEEL
PLANT, SEATTLE 47.61N, 122.33W |
|
MYRTLE BEACH
33.69N, 78.89W |
THE
BREWSTER "LILAC HOUSE" DIG, DUXBURY 42.02N,
70.40W |
EIGHT MILE LAKE SOUTH SHORE 47.52N, 120.86W |
|
FLORIDA
- Return to Top |
RACE POINT BEACH , PROVINCETOWN
(2 SAMPLES) - 42.08N,
70.22W |
GOLDEN GARDENS PARK, SEATTLE 47.69N, 122.40W
|
|
SIESTA
KEY (2 SAMPLES)
27.13N, 82.10W |
NAUSET - 41.84N,
69.96W |
|
|
JACKSONVILLE ILMENITE
SAND
30.33N, 81.65W |
CHAPEL
BROOK, ASHFIELD 42.48N, 72.76W |
HAWAII
- Return to Top |
|
COCOA BEACH
28.33N, 80.62W |
VERMONT
- Return to Top |
WAILEA BEACH,
MAUI 20.68N, 156.45W |
|
GARDEN KEY, DRY
TORTUGAS NAT. PK. 24.63N, 82.92W |
ROCK RIVER, EAST
DOVER 42.90N, 72.80W |
UNKNOWN S.
MAUI BEACH,
MAUI ≈20.64N,
≈156.45W |
|
BONITA BEACH, BONITA SPRINGS 26.35N, 81.79W |
BROAD BROOK, GUILFORD 42.77N, 72.63W |
UNKNOWN BEACH, OAHU |
|
FORT DESOTO 27.61N, 82.73W
|
BREWSTER RIVER GORGE, JEFFERSONVILLE 44.64N, 72.83W
|
KAPUKAHEHU BEACH, MOLOKAI 21.14N,
157.29W |
|
FORT LAUDERDALE 26.15N, 80.14W
|
NEW YORK
- Return to Top |
LA PEROUSE BAY, MAUI (2 SAMPLES) 20.60N, 156.42W
|
|
NEAR PENSACOLA
≈30.44N, ≈87.19W |
WHITE CREEK,
BELFAST - 42.20N, 78.06W |
KAHEKILI
BEACH PARK,
MAUI 20.53N, 156.40W
|
|
BOCA RATON 26.37N,
80.10W |
THREE SISTERS
ISLANDS, NIAGARA FALLS 43.08N, 79.07W |
|
|
MOLASSES REEF
25.01N, 80.37W |
|
|
|
VENICE
27.09N, 82.42W |
|
NEW MEXICO
- Return to Top |
|
DISTRICT OF COLUMBIA
- Return to Top |
CONNECTICUT
- Return to Top |
SHARK TOOTH RIDGE
35.55N, 107.12W |
|
ROOSEVELT ISLAND, POTOMAC RIVER
40.76N, 73.95W
|
EAST BEACH,
SHERWOOD ISLAND STATE PARK, GREEN FARMS 41.06N, 71.30W |
RIO VISTA BM, HONDO
CANYON, TAOS COUNTY ≈36.39N,
≈105.57W |
|
MARYLAND
- Return to Top |
NEW HAMPSHIRE
- Return to Top |
TRINITY BOMB SITE 33.68N, 106.48W |
|
CHESAPEAKE &
OHIO CANAL ≈38.98N,
≈77.16W (2 SAMPLES) |
JOHNSON BROOK, THORNTON GORE 43.90N, 71.64W
|
SANDIA MOUNTAINS ≈35.21N,
≈104.45W (2 SAMPLES) |
|
ROCK CREEK
TRAIL, WHEATON-GLENMONT 39.05N, 77.06W |
SOUTH DOWN SHORES,
LAKE WINNIPESAUKEE, LACONIA 43.60N, 71.32W |
ALBUQUERQUE 35.11N, 106.61W (6 SAMPLES) |
|
OCEAN CITY
38.39N, 75.07W |
RHODE ISLAND
- Return to Top |
PETROGLYPH NATIONAL
MONUMENT RINCONADA CANYON TRAIL ≈35.14N,
≈106.76W |
|
MONOCACY
RIVER, NATIONAL MONOCACY BATTLEFIELD, FREDERICK 39.37N, 77.39W |
CHARLESTOWN
BEACH, CHARLESTOWN 41.36N, 71.65W |
KIRTLAND AIR FORCE BASE 35.04N, 106.61W
|
|
BLACK HILL
REGIONAL PARK - RIVER INLET 39.18N, 77.27W |
NARRAGANSETT
PIER BEACH, NARRAGANSETT 41.45N, 71.45W |
DRY RIVER WASH, APODACA 36.20N, 105.86W
|
|
BLACK HILL REGIONAL PARK - LITTLE LAKE SENECA 39.18N, 77.27W
|
PRUDENCE ISLAND
41.62N, 71.32W |
UTAH
- Return to Top |
|
GEORGE
WASHINGTON MEMORIAL PKWAY. POTOMAC (2 SAMPLES) - 39.01N, 77.22W |
|
DUGWAY PROVING GROUNDS 40.19N, 113.21W
|
|
GAITHERSBURG ANTHILL 39.13N, 77.23W
|
|
GREAT SALT LAKE
SALT (4 SAMPLES) ≈41.17N,
≈112.58W |
|
UPPER ROCK CREEK PARK, REDLAND (2 SAMPLES) 39.14N,
77.16W
|
|
DEAD HORSE POINT
STATE PARK 38.51N, 109.74W |
|
MUDDY BRANCH PARK, NORTH POTOMAC 39.09N, 77.23W
|
|
VERNON HILLS
WONDERSTONE QUARRY 40.06N, 112.21W |
|
CHESAPEAKE &
DELAWARE CANAL, CHESAPEAKE CITY 39.53N, 75.81W |
|
GYPSUM SAND DUNES
NEAR KNOLLS 40.72N, 113.29W |
|
NORTH CAROLINA
- Return to Top |
|
|
|
EMERALD ISLE
34.67N, 77.01W |
|
CALIFORNIA
- Return to Top |
|
HIGHLANDS (2 SAMPLES) 35.05N, 83.20W
|
|
TURNOUT OFF
ROUTE 97, DORRIS 41.97N, 121.92W |
|
WRIGHTSVILLE
BEACH 34.21N, 77.80W |
|
KLAMATH RIVER BANK, HORNBROOK
41.91N, 122.56W |
|
WEST VIRGINIA
- Return to Top |
|
POINT LOMA
SUBMARINE BASE ENTRANCE TO SAN DIEGO HARBOR 32.67N, 117.24W |
|
SHENANDOAH PULP
FACTORY, HARPERS FERRY 39.33N, 77.74W |
|
OCEANSIDE -
33.21N, 117.31W |
|
BANKS OF THE
SHENANDOAH RIVER, BLOOMERY 39.25N, 77.82W |
|
LA JOLLA
32.84N, 117.28W |
|
BOLIVAR CEMETERY, BOLIVAR (2 SAMPLES) 39.32N, 77.75W |
|
ALISO BEACH (3
SAMPLES) 33.51N, 117.75W |
|
EDGE HILL CEMETERY, CHARLES TOWN 39.28N, 77.86W |
|
CAPO BEACH 33.46N, 117.67W |
|
SHANNONDALE
(2 SAMPLES) 39.22N, 77.81W |
|
THORNHILL BROOME BEACH (2 SAMPLES) 34.09N, 118.96W |
|
GEORGIA
- Return to Top |
|
SAN
CLEMENTE 33.42N, 117.61W |
|
TYBEE
ISLAND (2 SAMPLES) 32.01N, 80.85W
|
|
FALLEN LEAF
LAKE 38.92N, 120.06W |
|
|
|
SOUTH
CARLSBAD STATE BEACH, CARLSBAD (5 SAMPLES) 33.12N, 117.30W |
|
|
|
POINT REYES
NATIONAL SEASHORE (12
SAMPLES) 38.07N, 122.81W |
|
|
|
LAKE ELSINORE 33.68N, 117.35W
|
|
|
|
CRESCENT CITY
(2 SAMPLES) 41.76N, 124.20W |
|
|
|
SOUTH
CARLSBAD STATE BEACH, CARLSBAD (5 SAMPLES) 33.12N, 117.30W |
|
|
|
NEVADA
- Return to Top |
|
|
|
LAKE TAHOE
(6 SAMPLES) 39.00N, 119.95W |
|
|
|
DAYTON STATE
PARK, CARSON RIVER 39.25N, 119.59W |
|
|
|
HIGHWAY 50 NEAR
CARSON CITY 39.16N, 119.75W |
|
|
|
TOPAZ LAKE 38.68N,
119.54W |
|
|
|
WASHOE LAKE STATE
PARK 39.25N, 119.79W |
|
|
|
TRUCKEE RIVER
(NATIONAL AUTO MUSEUM, RENO 39.53N, 119.82W |
|
|
|
OREGON - Return to Top |
|
|
|
ODELL LAKE (3 Samples) 43.57N, 122.00W |
|
|
|
DEXTER RESERVOIR (2
SAMPLES) 43.92N, 122.81W |
|
|
|
LAKE EWAUNA,
KLAMATH FALLS 42.21N, 121.78W |
|
|
|
UPPER KLAMATH LAKE, FREMONT WINEMA NAT. FOREST
≈ 42.94N, ≈121.31W |
|
|
|
7 FEATHERS TRUCK
AND TRAVEL CENTER CANYONVILLE 42.93N, 123.28W |
|
|
|
REST STOP ON ROUTE
97, BEAVER MARSH 43.13N, 121.80W |
|
|
|
SANDY RIVER DELTA (2
SAMPLES) ≈45.52N,
≈122.68W |
|
|
|
VISITOR CENTER ROUTE 97, MIDLAND 42.13N, 121.82W |
|
|
|
CEDAR VALLEY 43.30N, 123.62W
|
|
|
|
COLORADO - Return to Top |
|
|
|
GORE CREEK, VAIL
39.64N, 106.36W |
|
|
|
INDEPENDENCE PASS, CONTINENTAL DIVIDE 39.10N, 106.56W
|
|
|
|
GREAT SAND DUNES
NATIONAL PARK (2 SAMPLES) 37.73N, 105.51W |
|
|
|
ALASKA - Return to Top |
|
|
|
NOME (2 SAMPLES)
64.50N, 165.40W |
|
|
|
VALDEZ 61.13N,
146.35W |
|
|
|
WHITTIER 60.77N,
148.68W |
|
|
|
MCCARTHY RIVER
61.43N, 142.91W |
|
|
|
TALKEETNA RIVER, TALKEETNA 62.31N, 150.09W |
|
|
|
KENNECOTT
61.49N, 142.89W |
|
|
|
KENNECOTT RIVER
|
|
|
|
KENNECOTT
GLACIER |
|
|
|
KENNECOTT
MINE INTERIOR |
|
|
|
COPPER RIVER ≈62.2N,
≈144.7W
|
|
|
|
ST. MICHAEL 63.47N, 162.05W
|
|
|
|
PETERSBURG
56.80N, 132.94W |
|
|
|
MENDENHALL
GLACIER (3 SAMPLES) 58.36N, 134.52 W
|
|
|
|
ST.
LAWRENCE ISLAND, GAMBELL 63.42N, 170.40W |
|
|
|
BREVIG MISSION 65.33N, 166.49W |
|
|
|
KOYUKUK 64.88N, 157.70W |
|
|
|
SHAKTOOLIK 64.36N, 161.19W |
|
|
|
ELIM
64.62N, 162.26W |
|
|
|
SHISHMAREF 66.26N, 166.07W |
|
|
|
TELLER
65.26N, 166.35W |
|
|
|
GOLOVIN 64.55N, 163.03W |
|
|
|
WHITE MOUNTAIN 64.68N, 163.41W
|
|
|
|
TOWN
LAKE, CHITNA 61.54N, 144.43W |
|
|
|