Abundant evidence supports the major contentions of the seafloor-spreading theory. First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.irst, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.
Polk County Weather. The average temperature of Polk County is 72.96Â°F, which is higher than the Florida average temperature of 71.80Â°F and is much higher than the national average temperature of 54.45Â°F. Historical Weather. Heating Cost Index, #14.
North Florida and Panhandle Beaches. Although itâs still quite nice, the weather in North Florida and the Panhandle may not be beach-friendly in November. High temperatures in Jacksonville Beach, St. Augustine Beach, Pensacola Beach and Panama City Beach range from 73 to 75 degrees during the day. At night, the temperature can fall into the low 50s.