BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//FeralSkills//Event//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:event-6163@feralskills.com
DTSTAMP:20260919T191411Z
DTSTART:20261002T210000Z
DTEND:20261003T050000Z
SUMMARY:Geology Up the Gunflint Trail
URL:https://feralskills.com/events/geology-up-the-gunflint-trail-2026-10-02
STATUS:CONFIRMED
DESCRIPTION:This class does not meet at North House The rocks exposed along
  the upper stretch of the Gunflint Trail from Saganaga Lake to Gunflint La
 ke record several chapters of Earth’s geologic history over the past 2.7 b
 illion years. After an introductory presentation on ​Friday evening\, all 
 of Saturday and half of Sunday will be spent in the field\, traversing thr
 ough an ancient sequence of exposed rocks that tell an incredible and awes
 ome story of how the core of North America was assembled. The Saturday fie
 ld trip starts at the north end of the trail where we will visit exposures
  of ancient granitic and volcanic rocks that record the early creation of 
 the North American continent. To the south\, we find iron-rich sedimentary
  rocks (iron-formation) deposited about 1.8 billion years ago in a shallow
  sea teeming with primitive lifeforms. As we approach the Gunflint Lake ar
 ea\, we encounter 1 billion-year-old igneous rocks formed during North Ame
 rica’s failed attempt to break apart. All along our route\, we will also o
 bserve “young” deposits of sand\, gravel and boulders left behind by mile-
 thick Ice-Age glaciers that covered the area over the past 2 million years
 . The Sunday morning field trip will visit exposures of deformed iron form
 ation that record the violent impact of a large meteorite that struck Eart
 h about 1.85 billion years near Sudbury\, Ontario. Physical Ability/Skills
  Needed: Several of the field trip stops on Saturday and Sunday involve wa
 lking along established hiking trails with mild to moderate inclines for u
 p to 1.5 miles. Some areas involve walking on irregular bedrock surfaces. 
 As such\, sturdy footwear is strongly recommended and people with physical
  mobility issues are discouraged from enrolling. Please note: This class t
 akes place up the Gunflint Trail approximately 45 miles from North House. 
 Following a Friday class meeting at Borderland Lodge\, there will be field
  trips both Saturday and Sunday. It is recommended to secure lodging along
  the Gunflint Trail.
LOCATION:North House Folk School\, Grand Marais\, MN
END:VEVENT
END:VCALENDAR