| 1 |
 |
Los Vaqueros Reservoir Earthcache
by PathfinderMark
Contra Costa county, CA |
15 years 11 months |
38 |
42.1 (41.0) |
| 2 |
 |
Saint Mary's Banks - The Mulholland Formation
by jagerdorf
Contra Costa county, CA |
15 years |
37 |
40.6 (39.5) |
| 3 |
 |
Liesegang Bands
by jagerdorf
Contra Costa county, CA |
14 years 3 months |
36 |
39.6 (38.6) |
| 4 |
 |
Year after year, it keeps it's balance 🤸
by Psychoticjesters
Contra Costa county, CA |
8 years 11 months |
25 |
35.7 (34.3) |
| 5 |
 |
HFS #14: Point Pinole
by jagerdorf
Contra Costa county, CA |
12 years 6 months |
49 |
25.6 (25.1) |
| 6 |
 |
Prospect Adit
by jagerdorf
Contra Costa county, CA |
14 years 3 months |
56 |
25.5 (25.0) |
| 7 |
 |
HFS# 13: San Pablo - Contra Costa CC
by jagerdorf
Contra Costa county, CA |
12 years 7 months |
55 |
22.9 (22.5) |
| 8 |
 |
Just Another Scar in the Earth
by Psychoticjesters
Contra Costa county, CA |
3 years 11 months |
19 |
20.7 (19.7) |
| 9 |
 |
Sand Mines
by Alamogul
Contra Costa county, CA |
16 years 2 months |
81 |
20.0 (19.7) |
| 10 |
 |
Las Trampas: Ancient Sea
by Unit33
Contra Costa county, CA |
8 years 10 months |
49 |
18.2 (17.8) |
| 11 |
 |
Rocky Rose Buds
by Dasgrendel
Contra Costa county, CA |
16 years 2 months |
92 |
17.6 (17.5) |
| 12 |
 |
Graywacke
by TeamNulti2003
Contra Costa county, CA |
12 years 6 months |
74 |
17.0 (16.8) |
| 13 |
 |
Caldecott Tilted Beds
by jagerdorf
Contra Costa county, CA |
16 years 3 months |
98 |
16.6 (16.4) |
| 14 |
 |
Treasures of Mount Diablo
by Alamogul
Contra Costa county, CA |
12 years 5 months |
77 |
16.1 (15.9) |
| 15 |
 |
Antioch Dunes
by jagerdorf
Contra Costa county, CA |
12 years 10 months |
84 |
15.3 (15.1) |
| 16 |
 |
Lime Mine
by Alamogul
Contra Costa county, CA |
15 years 9 months |
107 |
14.8 (14.6) |
| 17 |
 |
Shell Ridge
by Alamogul
Contra Costa county, CA |
16 years 4 months |
112 |
14.6 (14.5) |
| 18 |
 |
Blue Schist
by TeamNulti2003
Contra Costa county, CA |
17 years 5 months |
120 |
14.5 (14.4) |
| 19 |
 |
Pinole: It's your fault :)
by automatopotato
Contra Costa county, CA |
1 year 2 months |
9 |
13.7 (12.3) |
| 20 |
 |
Radiolarian Chert Folds - Chevrons
by TeamNulti2003
Contra Costa county, CA |
17 years 5 months |
128 |
13.6 (13.5) |
| 21 |
 |
Red Ribbon Chert, is it Magnetic? 🧲
by Psychoticjesters
Contra Costa county, CA |
1 year |
8 |
13.3 (11.8) |
| 22 |
 |
Blueschist – Yes Road Cuts ARE Tourist Attractions
by jagerdorf
Contra Costa county, CA |
3 years 10 months |
30 |
13.1 (12.6) |
| 23 |
 |
Hercules Slump and Earthflow
by Thutmosis
Contra Costa county, CA |
16 years 11 months |
139 |
12.2 (12.1) |
| 24 |
 |
The Anthropocene and the Great Flood 1852-53
by jagerdorf
Contra Costa county, CA |
13 years 8 months |
117 |
11.7 (11.6) |
| 25 |
 |
Turritella Snail Bed
by TeamNulti2003
Contra Costa county, CA |
17 years 5 months |
156 |
11.2 (11.1) |
| 26 |
 |
Black Diamonds
by Alamogul
Contra Costa county, CA |
16 years 2 months |
145 |
11.2 (11.1) |
| 27 |
 |
Thrust Fault
by TeamNulti2003
Contra Costa county, CA |
12 years 6 months |
114 |
11.0 (10.9) |
| 28 |
 |
Los Vaqueros Concretions Earthcache
by PathfinderMark
Contra Costa county, CA |
16 years |
157 |
10.2 (10.1) |
| 29 |
 |
Carquinez Scenic Drive Earthcache
by nsearls25
Contra Costa county, CA |
6 years 11 months |
69 |
10.1 (9.93) |
| 30 |
 |
Easter Hill Lava
by laytonius
Contra Costa county, CA |
1 year 1 month |
12 |
9.63 (8.89) |
| 31 |
 |
Fossils in Oakley?
by buffalod5
Contra Costa county, CA |
4 years 3 months |
45 |
9.47 (9.26) |
| 32 |
 |
Pillow Basalt
by TeamNulti2003
Contra Costa county, CA |
17 years 5 months |
192 |
9.08 (9.03) |
| 33 |
 |
Round Top
by Alamogul
Contra Costa county, CA |
19 years 4 months |
219 |
8.86 (8.82) |
| 34 |
 |
Richmond "REDS"
by Team_Conway
Contra Costa county, CA |
1 year 2 months |
19 |
6.17 (5.86) |
| 35 |
 |
Quartz Intrusions, Folding, and Foliation
by yoyo ken
Contra Costa county, CA |
8 months |
11 |
6.05 (5.54) |
| 36 |
 |
Wind Caves
by TeamNulti2003
Contra Costa county, CA |
17 years 5 months |
291 |
5.99 (5.97) |
| 37 |
 |
Roadside Geology: Slate "EXPOSED"
by Team_Conway
Contra Costa county, CA |
1 year 2 months |
21 |
5.62 (5.36) |
| 38 |
 |
Northbrae Rhyolite and Hayward Fault Dynamics
by yoyo ken
Contra Costa county, CA |
8 months |
15 |
4.44 (4.16) |
| 39 |
 |
Sag Ponds and Springs Along the Hayward Fault
by yoyo ken
Contra Costa county, CA |
8 months |
16 |
4.16 (3.91) |
| 40 |
 |
Metamorphic Facies of the Farallon Megathrust
by yoyo ken
Contra Costa county, CA |
8 months |
20 |
3.33 (3.17) |