way-up - 2026 ACF Regionals

Question

Description acceptable. The flame structures in between load casts are a common indicator of this property. For 10 points each:

[10h] Name this property of geologic samples indicated by geopetal indicators like void-filling.

ANSWER: way-up [or bed orientation or original orientation; or younging direction; or stratigraphic facing; accept answers specifying which direction is up or down or the direction of gravity at the time of formation; accept answers specifying what is the top or bottom of your sample]

[10m] Determining what corresponds to the top of your sample is necessary to apply this law of stratigraphy, which states that younger strata lie on top of older strata.

ANSWER: law of superposition

[10e] Conversely, the way-up direction can be determined using the law of superposition using the “index” type of these samples, which indicate relative age. Amber often preserves these remnants of past organisms.

ANSWER: fossils [accept index fossils]

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Summary


California (South)	Main Site	Y	4	17.50	100%	75%	0%
Canada	Main Site	Y	12	15.83	100%	58%	0%
Great Lakes	Main Site	Y	4	20.00	100%	100%	0%
Lower Mid-Atlantic	Main Site	Y	8	13.75	100%	38%	0%
Northeast	Main Site	Y	6	18.33	100%	83%	0%
Overflow	Main Site	Y	3	13.33	100%	33%	0%
Southeast	Main Site	Y	8	18.75	100%	88%	0%
UK	Main Site	Y	6	13.33	100%	33%	0%
Upper Mid-Atlantic	Main Site	Y	8	12.50	88%	38%	0%

Data


UC Irvine	Arizona State	0	10	10
UCSD B	UCLA B	10	10	20
UCLA A	UCSD A	10	10	20
UCSD C	UC Santa Barbara	10	10	20
Western C	Brock	10	10	20
Waterloo B	Carleton University	0	10	10
McGill A	Guelph	0	10	10
Western A	McMaster B	10	10	20
Queen's	Ottawa	10	10	20
Simon Fraser	McGill B	10	10	20
Toronto B	UBC A	10	10	20
Toronto G	Toronto C	0	10	10
UBC B	Toronto E	10	10	20
Toronto F	Toronto Metropolitan	0	10	10
Waterloo A	McMaster A	10	10	20
Western B	Toronto D	0	10	10
CWRU A	Ohio State B	10	10	20
Ohio State A	Pittsburgh	10	10	20
CWRU B	Ohio State C	10	10	20
Michigan B	Michigan A	10	10	20
Duke	Liberty B	0	10	10
South Carolina A	James Madison A	0	10	10
Virginia Tech A	VCU	10	10	20
Virginia Tech B	North Carolina B	10	10	20
Virginia	Liberty C	10	10	20
William and Mary	South Carolina B	0	10	10
Dartmouth B	Bowdoin A	10	10	20
MIT	Bowdoin B	10	10	20
Brown	Brandeis B	10	10	20
Harvard A	Brandeis A	10	10	20
Harvard B	Southern Connecticut State	10	10	20
Dartmouth A	Yale	0	10	10
Liberty A	Wake Forest	0	10	10
Iowa State	Missouri B	10	10	20
Missouri A	Minnesota A	0	10	10
Washington B	Washington A	0	10	10
North Carolina C	North Carolina A	0	10	10
Louisville B	Bruin	10	10	20
Georgia Tech C	Georgia Tech D	10	10	20
Kentucky	Mississipi State	10	10	20
Louisville A	Sewanee	10	10	20
Alabama A	Tennessee A	10	10	20
Alabama B	Tennessee B	0	10	10
Georgia Tech B	WashU A	10	10	20
WashU B	Vanderbilt B	10	10	20
Southampton A	Birmingham	0	10	10
Cambridge A	Imperial B	0	10	10
Oxford C	Cardiff	0	10	10
Manchester	Southampton B	10	10	20
Edinburgh A	Warwick A	10	10	20
Montpellier	Warwick B	0	10	10
NYU A	Catholic	0	10	10
Columbia A	Rutgers B	0	10	10
Columbia C	Columbia B	10	10	20
John Jay	Rutgers A	0	0	0
Johns Hopkins A	Maryland A	10	10	20
Johns Hopkins B	Maryland C	0	10	10
Maryland B	NYU C	10	10	20
Georgetown	NYU B	0	10	10