Jaramillo Creek is a 10 mile long stream

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

 in New Mexico

New Mexico

New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

 with headwaters in the Jemez Mountains

Jemez Mountains

The Jemez Mountains are a volcanic group of mountains in New Mexico, United States. The highest point in the range is Chicoma Mountain at an elevation of 11,561 feet . The town of Los Alamos and Los Alamos National Laboratory adjoin the eastern side of the range while the town of Jemez Springs...

. Jaramillo is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the East Fork Jemez which is then a tributary of the Jemez River

Jemez River

The Jemez River is a tributary of the Rio Grande in the U.S. state of New Mexico. The river is formed by the confluence of the East Fork Jemez River and San Antonio Creek, which drain a number of tributaries in the area of the Jemez Mountains and Santa Fe National Forest. The Jemez River is about ...

, a tributary of the Rio Grande

Rio Grande

The Rio Grande is a river that flows from southwestern Colorado in the United States to the Gulf of Mexico. Along the way it forms part of the Mexico – United States border. Its length varies as its course changes...

. The creek is located in a graben

Graben

In geology, a graben is a depressed block of land bordered by parallel faults. Graben is German for ditch. Graben is used for both the singular and plural....

 in the Pleistocene

Pleistocene

The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....

 age Valles Caldera. The Jaramillo normal event

Jaramillo normal event

The Jaramillo normal event is a period of normal polarity of Earth's magnetic field during the Matumaya Reversed Epoch. The Jaramillo normal event is dated to 1.06 to 0.9 million years ago in the stratigraphic record of Pleistocene epoch rocks found near Jaramillo Creek in the Valles Caldera of...

 (1.06-0.9 Mya) of the Matumaya Reversed Epoch was named for rocks selected and aged at the type locality

Type locality (geology)

Type locality , also called type area or type locale, is the where a particular rock type, stratigraphic unit, fossil or mineral species is first identified....

near the creek.