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Rocks on the Move: Point Bonita Virtual Tour. Point Bonita Trail The Point Bonita trail is a half mile hike on a spine of rock jutting out into the sea.

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Presentation on theme: "Rocks on the Move: Point Bonita Virtual Tour. Point Bonita Trail The Point Bonita trail is a half mile hike on a spine of rock jutting out into the sea."— Presentation transcript:

1 Rocks on the Move: Point Bonita Virtual Tour

2 Point Bonita Trail The Point Bonita trail is a half mile hike on a spine of rock jutting out into the sea.

3 A Red-tailed hawk looks for prey, near the beginning of the Point Bonita trail.

4 The Point Bonita trail winds through giant slabs of underwater volcanoes.

5 Can you find evidence of geologic change in this picture of the Point Bonita trail?

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7 The remains of the former US Coast Guard lifeboat station in Bonita Cove.

8 The Point Bonita trail can be steep in places. Watch your step!

9 Can you find the Franciscan rocks?

10 Radiolarian Chert Serpentinite Graywacke Sandstone Pillow Basalt

11 An exposure of graywacke sandstone along the Point Bonita trial.

12 A small fault crosses the Point Bonita trail and separates two types of rocks.

13 This graywacke sandstone hillside is slowly eroding.

14 A ground dwelling spider on the Point Bonita trail waits for something tasty.

15 Diabase is an intrusive igneous rock. It is formed from lava that did not erupt into seawater.

16 This is the only section of the Point Bonita trail where we find Franciscan serpentinite.

17 This section of the Point Bonita trail washed out as a result of the El Niño.

18 Coastal black-tailed deer can sometimes be seen along the trail.

19 Brown pelicans soaring over Bonita Cove.

20 The Point Bonita trail is constantly changing. What geologic process is happening at the arrow?

21 The frequent fog of Point Bonita leaves its mark on a spider’s web.

22 Supplies for the lighthouse keepers and their families were delivered to this boat landing once a year.

23 You will cross many bridges along the Point Bonita trail.

24 Pillow basalt is very common on the Point Bonita trail. It forms from lava that erupted out of underwater volcanoes.

25 Point Bonita cabbage grows from the remains of gardens kept by the lighthouse keepers’ families.

26 Trentepohlia, although orange in color, is a type of green chlorophyte algae that grows on the moist rock walls above the tunnel.

27 Inside the Point Bonita tunnel.

28 Ranger Mayeda leads a Rocks on the Move investigation.

29 A small Pillow basalt island near the lighthouse serves as a good resting spot for these California sea lions.

30 Looking north from the Point Bonita trail towards Bird Rock.

31 Can you find the ancient beach?

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33 A Skipper warms its body against the rocks on the Point Bonita trail.

34 The Point Bonita lighthouse in the early evening light.


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