== Reggie Jackson signed Rookie card == A 1969 Topps Reggie Jackson Rookie card number 260 has a book value of about $300.00 unsigned in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important. A Reggie Jackson signed baseball card is worth between $35. -$75. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been authenticated could sell at half the market value or less.
Ocean Trenches. Introduction. Ocean trenches are natural tectonic plate boundaries between two crustal plates. When a continental plate converges with an oceanic plate a subduction zone forms. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench.cean Trenches. Introduction. Ocean trenches are natural tectonic plate boundaries between two crustal plates. When a continental plate converges with an oceanic plate a subduction zone forms. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench.
Answer: The ocean's deepest area is the Mariana Trench (also called the Marianas Trench), which is about 11 km (almost 7 miles, or almost 36,000 feet) deep. The trench is 1,554 miles long and 44 miles wide, and is like the Grand Canyon of the ocean, although it is 120 times larger.Contrary to what you might picture, the trench is wide-according to NOAA, almost 5 times wider than it is deep. The Mariana Trench is located in the western North Pacific Ocean.he trench is 1,554 miles long and 44 miles wide, and is like the Grand Canyon of the ocean, although it is 120 times larger. Contrary to what you might picture, the trench is wide-according to NOAA, almost 5 times wider than it is deep. The Mariana Trench is located in the western North Pacific Ocean.